Initial import of Sylpheed (GTK2 version).

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@1 ee746299-78ed-0310-b773-934348b2243d

1 files changed, 3189 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 00000000..493c9597
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,3189 @@
+/*
+ * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2004 Hiroyuki Yamamoto
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "defs.h"
+
+#include <glib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
+#if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
+#  include <wchar.h>
+#  include <wctype.h>
+#endif
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <dirent.h>
+#include <time.h>
+
+#include "intl.h"
+#include "utils.h"
+#include "socket.h"
+#include "statusbar.h"
+#include "logwindow.h"
+
+#define BUFFSIZE	8192
+
+extern gboolean debug_mode;
+
+static void hash_free_strings_func(gpointer key, gpointer value, gpointer data);
+
+void list_free_strings(GList *list)
+{
+	list = g_list_first(list);
+
+	while (list != NULL) {
+		g_free(list->data);
+		list = list->next;
+	}
+}
+
+void slist_free_strings(GSList *list)
+{
+	while (list != NULL) {
+		g_free(list->data);
+		list = list->next;
+	}
+}
+
+static void hash_free_strings_func(gpointer key, gpointer value, gpointer data)
+{
+	g_free(key);
+}
+
+void hash_free_strings(GHashTable *table)
+{
+	g_hash_table_foreach(table, hash_free_strings_func, NULL);
+}
+
+static void hash_free_value_mem_func(gpointer key, gpointer value,
+				     gpointer data)
+{
+	g_free(value);
+}
+
+void hash_free_value_mem(GHashTable *table)
+{
+	g_hash_table_foreach(table, hash_free_value_mem_func, NULL);
+}
+
+gint str_case_equal(gconstpointer v, gconstpointer v2)
+{
+	return strcasecmp((const gchar *)v, (const gchar *)v2) == 0;
+}
+
+guint str_case_hash(gconstpointer key)
+{
+	const gchar *p = key;
+	guint h = *p;
+
+	if (h) {
+		h = tolower(h);
+		for (p += 1; *p != '\0'; p++)
+			h = (h << 5) - h + tolower(*p);
+	}
+
+	return h;
+}
+
+void ptr_array_free_strings(GPtrArray *array)
+{
+	gint i;
+	gchar *str;
+
+	g_return_if_fail(array != NULL);
+
+	for (i = 0; i < array->len; i++) {
+		str = g_ptr_array_index(array, i);
+		g_free(str);
+	}
+}
+
+gboolean str_find(const gchar *haystack, const gchar *needle)
+{
+	return strstr(haystack, needle) != NULL ? TRUE : FALSE;
+}
+
+gboolean str_case_find(const gchar *haystack, const gchar *needle)
+{
+	return strcasestr(haystack, needle) != NULL ? TRUE : FALSE;
+}
+
+gboolean str_find_equal(const gchar *haystack, const gchar *needle)
+{
+	return strcmp(haystack, needle) == 0;
+}
+
+gboolean str_case_find_equal(const gchar *haystack, const gchar *needle)
+{
+	return strcasecmp(haystack, needle) == 0;
+}
+
+gint to_number(const gchar *nstr)
+{
+	register const guchar *p;
+
+	if (*nstr == '\0') return -1;
+
+	for (p = nstr; *p != '\0'; p++)
+		if (!isdigit(*p)) return -1;
+
+	return atoi(nstr);
+}
+
+/* convert integer into string,
+   nstr must be not lower than 11 characters length */
+gchar *itos_buf(gchar *nstr, gint n)
+{
+	g_snprintf(nstr, 11, "%d", n);
+	return nstr;
+}
+
+/* convert integer into string */
+gchar *itos(gint n)
+{
+	static gchar nstr[11];
+
+	return itos_buf(nstr, n);
+}
+
+gchar *to_human_readable(off_t size)
+{
+	static gchar str[10];
+
+	if (size < 1024)
+		g_snprintf(str, sizeof(str), _("%dB"), (gint)size);
+	else if (size >> 10 < 1024)
+		g_snprintf(str, sizeof(str), _("%.1fKB"), (gfloat)size / (1 << 10));
+	else if (size >> 20 < 1024)
+		g_snprintf(str, sizeof(str), _("%.2fMB"), (gfloat)size / (1 << 20));
+	else
+		g_snprintf(str, sizeof(str), _("%.2fGB"), (gfloat)size / (1 << 30));
+
+	return str;
+}
+
+/* strcmp with NULL-checking */
+gint strcmp2(const gchar *s1, const gchar *s2)
+{
+	if (s1 == NULL || s2 == NULL)
+		return -1;
+	else
+		return strcmp(s1, s2);
+}
+
+/* compare paths */
+gint path_cmp(const gchar *s1, const gchar *s2)
+{
+	gint len1, len2;
+
+	if (s1 == NULL || s2 == NULL) return -1;
+	if (*s1 == '\0' || *s2 == '\0') return -1;
+
+	len1 = strlen(s1);
+	len2 = strlen(s2);
+
+	if (s1[len1 - 1] == G_DIR_SEPARATOR) len1--;
+	if (s2[len2 - 1] == G_DIR_SEPARATOR) len2--;
+
+	return strncmp(s1, s2, MAX(len1, len2));
+}
+
+/* remove trailing return code */
+gchar *strretchomp(gchar *str)
+{
+	register gchar *s;
+
+	if (!*str) return str;
+
+	for (s = str + strlen(str) - 1;
+	     s >= str && (*s == '\n' || *s == '\r');
+	     s--)
+		*s = '\0';
+
+	return str;
+}
+
+/* remove trailing character */
+gchar *strtailchomp(gchar *str, gchar tail_char)
+{
+	register gchar *s;
+
+	if (!*str) return str;
+	if (tail_char == '\0') return str;
+
+	for (s = str + strlen(str) - 1; s >= str && *s == tail_char; s--)
+		*s = '\0';
+
+	return str;
+}
+
+/* remove CR (carriage return) */
+gchar *strcrchomp(gchar *str)
+{
+	register gchar *s;
+
+	if (!*str) return str;
+
+	s = str + strlen(str) - 1;
+	if (*s == '\n' && s > str && *(s - 1) == '\r') {
+		*(s - 1) = '\n';
+		*s = '\0';
+	}
+
+	return str;
+}
+
+/* Similar to `strstr' but this function ignores the case of both strings.  */
+gchar *strcasestr(const gchar *haystack, const gchar *needle)
+{
+	register size_t haystack_len, needle_len;
+
+	haystack_len = strlen(haystack);
+	needle_len   = strlen(needle);
+
+	if (haystack_len < needle_len || needle_len == 0)
+		return NULL;
+
+	while (haystack_len >= needle_len) {
+		if (!strncasecmp(haystack, needle, needle_len))
+			return (gchar *)haystack;
+		else {
+			haystack++;
+			haystack_len--;
+		}
+	}
+
+	return NULL;
+}
+
+gpointer my_memmem(gconstpointer haystack, size_t haystacklen,
+		   gconstpointer needle, size_t needlelen)
+{
+	const gchar *haystack_ = (const gchar *)haystack;
+	const gchar *needle_ = (const gchar *)needle;
+	const gchar *haystack_cur = (const gchar *)haystack;
+
+	if (needlelen == 1)
+		return memchr(haystack_, *needle_, haystacklen);
+
+	while ((haystack_cur = memchr(haystack_cur, *needle_, haystacklen))
+	       != NULL) {
+		if (haystacklen - (haystack_cur - haystack_) < needlelen)
+			break;
+		if (memcmp(haystack_cur + 1, needle_ + 1, needlelen - 1) == 0)
+			return (gpointer)haystack_cur;
+		else
+			haystack_cur++;
+	}
+
+	return NULL;
+}
+
+/* Copy no more than N characters of SRC to DEST, with NULL terminating.  */
+gchar *strncpy2(gchar *dest, const gchar *src, size_t n)
+{
+	register gchar c;
+	gchar *s = dest;
+
+	do {
+		if (--n == 0) {
+			*dest = '\0';
+			return s;
+		}
+		c = *src++;
+		*dest++ = c;
+	} while (c != '\0');
+
+	/* don't do zero fill */
+	return s;
+}
+
+#if !HAVE_ISWALNUM
+int iswalnum(wint_t wc)
+{
+	return isalnum((int)wc);
+}
+#endif
+
+#if !HAVE_ISWSPACE
+int iswspace(wint_t wc)
+{
+	return isspace((int)wc);
+}
+#endif
+
+#if !HAVE_TOWLOWER
+wint_t towlower(wint_t wc)
+{
+	if (wc >= L'A' && wc <= L'Z')
+		return wc + L'a' - L'A';
+
+	return wc;
+}
+#endif
+
+#if !HAVE_WCSLEN
+size_t wcslen(const wchar_t *s)
+{
+	size_t len = 0;
+
+	while (*s != L'\0')
+		++len, ++s;
+
+	return len;
+}
+#endif
+
+#if !HAVE_WCSCPY
+/* Copy SRC to DEST.  */
+wchar_t *wcscpy(wchar_t *dest, const wchar_t *src)
+{
+	wint_t c;
+	wchar_t *s = dest;
+
+	do {
+		c = *src++;
+		*dest++ = c;
+	} while (c != L'\0');
+
+	return s;
+}
+#endif
+
+#if !HAVE_WCSNCPY
+/* Copy no more than N wide-characters of SRC to DEST.  */
+wchar_t *wcsncpy (wchar_t *dest, const wchar_t *src, size_t n)
+{
+	wint_t c;
+	wchar_t *s = dest;
+
+	do {
+		c = *src++;
+		*dest++ = c;
+		if (--n == 0)
+			return s;
+	} while (c != L'\0');
+
+	/* zero fill */
+	do
+		*dest++ = L'\0';
+	while (--n > 0);
+
+	return s;
+}
+#endif
+
+/* Duplicate S, returning an identical malloc'd string. */
+wchar_t *wcsdup(const wchar_t *s)
+{
+	wchar_t *new_str;
+
+	if (s) {
+		new_str = g_new(wchar_t, wcslen(s) + 1);
+		wcscpy(new_str, s);
+	} else
+		new_str = NULL;
+
+	return new_str;
+}
+
+/* Duplicate no more than N wide-characters of S,
+   returning an identical malloc'd string. */
+wchar_t *wcsndup(const wchar_t *s, size_t n)
+{
+	wchar_t *new_str;
+
+	if (s) {
+		new_str = g_new(wchar_t, n + 1);
+		wcsncpy(new_str, s, n);
+		new_str[n] = (wchar_t)0;
+	} else
+		new_str = NULL;
+
+	return new_str;
+}
+
+wchar_t *strdup_mbstowcs(const gchar *s)
+{
+	wchar_t *new_str;
+
+	if (s) {
+		new_str = g_new(wchar_t, strlen(s) + 1);
+		if (mbstowcs(new_str, s, strlen(s) + 1) < 0) {
+			g_free(new_str);
+			new_str = NULL;
+		} else
+			new_str = g_realloc(new_str,
+					    sizeof(wchar_t) * (wcslen(new_str) + 1));
+	} else
+		new_str = NULL;
+
+	return new_str;
+}
+
+gchar *strdup_wcstombs(const wchar_t *s)
+{
+	gchar *new_str;
+	size_t len;
+
+	if (s) {
+		len = wcslen(s) * MB_CUR_MAX + 1;
+		new_str = g_new(gchar, len);
+		if (wcstombs(new_str, s, len) < 0) {
+			g_free(new_str);
+			new_str = NULL;
+		} else
+			new_str = g_realloc(new_str, strlen(new_str) + 1);
+	} else
+		new_str = NULL;
+
+	return new_str;
+}
+
+/* Compare S1 and S2, ignoring case.  */
+gint wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
+{
+	wint_t c1;
+	wint_t c2;
+
+	while (n--) {
+		c1 = towlower(*s1++);
+		c2 = towlower(*s2++);
+		if (c1 != c2)
+			return c1 - c2;
+		else if (c1 == 0 && c2 == 0)
+			break;
+	}
+
+	return 0;
+}
+
+/* Find the first occurrence of NEEDLE in HAYSTACK, ignoring case.  */
+wchar_t *wcscasestr(const wchar_t *haystack, const wchar_t *needle)
+{
+	register size_t haystack_len, needle_len;
+
+	haystack_len = wcslen(haystack);
+	needle_len   = wcslen(needle);
+
+	if (haystack_len < needle_len || needle_len == 0)
+		return NULL;
+
+	while (haystack_len >= needle_len) {
+		if (!wcsncasecmp(haystack, needle, needle_len))
+			return (wchar_t *)haystack;
+		else {
+			haystack++;
+			haystack_len--;
+		}
+	}
+
+	return NULL;
+}
+
+gint get_mbs_len(const gchar *s)
+{
+	const gchar *p = s;
+	gint mb_len;
+	gint len = 0;
+
+	if (!p)
+		return -1;
+
+	while (*p != '\0') {
+		mb_len = mblen(p, MB_LEN_MAX);
+		if (mb_len == 0)
+			break;
+		else if (mb_len < 0)
+			return -1;
+		else
+			len++;
+
+		p += mb_len;
+	}
+
+	return len;
+}
+
+/* Examine if next block is non-ASCII string */
+gboolean is_next_nonascii(const guchar *s)
+{
+	const guchar *p;
+
+	/* skip head space */
+	for (p = s; *p != '\0' && isspace(*p); p++)
+		;
+	for (; *p != '\0' && !isspace(*p); p++) {
+		if (*p > 127 || *p < 32)
+			return TRUE;
+	}
+
+	return FALSE;
+}
+
+gint get_next_word_len(const guchar *s)
+{
+	gint len = 0;
+
+	for (; *s != '\0' && !isspace(*s); s++, len++)
+		;
+
+	return len;
+}
+
+/* compare subjects */
+gint subject_compare(const gchar *s1, const gchar *s2)
+{
+	gchar *str1, *str2;
+
+	if (!s1 || !s2) return -1;
+	if (!*s1 || !*s2) return -1;
+
+	Xstrdup_a(str1, s1, return -1);
+	Xstrdup_a(str2, s2, return -1);
+
+	trim_subject_for_compare(str1);
+	trim_subject_for_compare(str2);
+
+	if (!*str1 || !*str2) return -1;
+
+	return strcmp(str1, str2);
+}
+
+gint subject_compare_for_sort(const gchar *s1, const gchar *s2)
+{
+	gchar *str1, *str2;
+
+	if (!s1 || !s2) return -1;
+
+	Xstrdup_a(str1, s1, return -1);
+	Xstrdup_a(str2, s2, return -1);
+
+	trim_subject_for_sort(str1);
+	trim_subject_for_sort(str2);
+
+	return strcasecmp(str1, str2);
+}
+
+void trim_subject_for_compare(gchar *str)
+{
+	guchar *srcp;
+
+	eliminate_parenthesis(str, '[', ']');
+	eliminate_parenthesis(str, '(', ')');
+	g_strstrip(str);
+
+	while (!strncasecmp(str, "Re:", 3)) {
+		srcp = str + 3;
+		while (isspace(*srcp)) srcp++;
+		memmove(str, srcp, strlen(srcp) + 1);
+	}
+}
+
+void trim_subject_for_sort(gchar *str)
+{
+	guchar *srcp;
+
+	g_strstrip(str);
+
+	while (!strncasecmp(str, "Re:", 3)) {
+		srcp = str + 3;
+		while (isspace(*srcp)) srcp++;
+		memmove(str, srcp, strlen(srcp) + 1);
+	}
+}
+
+void trim_subject(gchar *str)
+{
+	register guchar *srcp, *destp;
+	gchar op, cl;
+	gint in_brace;
+
+	destp = str;
+	while (!strncasecmp(destp, "Re:", 3)) {
+		destp += 3;
+		while (isspace(*destp)) destp++;
+	}
+
+	if (*destp == '[') {
+		op = '[';
+		cl = ']';
+	} else if (*destp == '(') {
+		op = '(';
+		cl = ')';
+	} else
+		return;
+
+	srcp = destp + 1;
+	in_brace = 1;
+	while (*srcp) {
+		if (*srcp == op)
+			in_brace++;
+		else if (*srcp == cl)
+			in_brace--;
+		srcp++;
+		if (in_brace == 0)
+			break;
+	}
+	while (isspace(*srcp)) srcp++;
+	memmove(destp, srcp, strlen(srcp) + 1);
+}
+
+void eliminate_parenthesis(gchar *str, gchar op, gchar cl)
+{
+	register guchar *srcp, *destp;
+	gint in_brace;
+
+	srcp = destp = str;
+
+	while ((destp = strchr(destp, op))) {
+		in_brace = 1;
+		srcp = destp + 1;
+		while (*srcp) {
+			if (*srcp == op)
+				in_brace++;
+			else if (*srcp == cl)
+				in_brace--;
+			srcp++;
+			if (in_brace == 0)
+				break;
+		}
+		while (isspace(*srcp)) srcp++;
+		memmove(destp, srcp, strlen(srcp) + 1);
+	}
+}
+
+void extract_parenthesis(gchar *str, gchar op, gchar cl)
+{
+	register gchar *srcp, *destp;
+	gint in_brace;
+
+	srcp = destp = str;
+
+	while ((srcp = strchr(destp, op))) {
+		if (destp > str)
+			*destp++ = ' ';
+		memmove(destp, srcp + 1, strlen(srcp));
+		in_brace = 1;
+		while(*destp) {
+			if (*destp == op)
+				in_brace++;
+			else if (*destp == cl)
+				in_brace--;
+
+			if (in_brace == 0)
+				break;
+
+			destp++;
+		}
+	}
+	*destp = '\0';
+}
+
+void extract_parenthesis_with_skip_quote(gchar *str, gchar quote_chr,
+					 gchar op, gchar cl)
+{
+	register gchar *srcp, *destp;
+	gint in_brace;
+	gboolean in_quote = FALSE;
+
+	srcp = destp = str;
+
+	while ((srcp = strchr_with_skip_quote(destp, quote_chr, op))) {
+		if (destp > str)
+			*destp++ = ' ';
+		memmove(destp, srcp + 1, strlen(srcp));
+		in_brace = 1;
+		while(*destp) {
+			if (*destp == op && !in_quote)
+				in_brace++;
+			else if (*destp == cl && !in_quote)
+				in_brace--;
+			else if (*destp == quote_chr)
+				in_quote ^= TRUE;
+
+			if (in_brace == 0)
+				break;
+
+			destp++;
+		}
+	}
+	*destp = '\0';
+}
+
+void eliminate_quote(gchar *str, gchar quote_chr)
+{
+	register guchar *srcp, *destp;
+
+	srcp = destp = str;
+
+	while ((destp = strchr(destp, quote_chr))) {
+		if ((srcp = strchr(destp + 1, quote_chr))) {
+			srcp++;
+			while (isspace(*srcp)) srcp++;
+			memmove(destp, srcp, strlen(srcp) + 1);
+		} else {
+			*destp = '\0';
+			break;
+		}
+	}
+}
+
+void extract_quote(gchar *str, gchar quote_chr)
+{
+	register gchar *p;
+
+	if ((str = strchr(str, quote_chr))) {
+		if ((p = strchr(str + 1, quote_chr))) {
+			*p = '\0';
+			memmove(str, str + 1, p - str);
+		}
+	}
+}
+
+void eliminate_address_comment(gchar *str)
+{
+	register guchar *srcp, *destp;
+	gint in_brace;
+
+	srcp = destp = str;
+
+	while ((destp = strchr(destp, '"'))) {
+		if ((srcp = strchr(destp + 1, '"'))) {
+			srcp++;
+			if (*srcp == '@') {
+				destp = srcp + 1;
+			} else {
+				while (isspace(*srcp)) srcp++;
+				memmove(destp, srcp, strlen(srcp) + 1);
+			}
+		} else {
+			*destp = '\0';
+			break;
+		}
+	}
+
+	srcp = destp = str;
+
+	while ((destp = strchr_with_skip_quote(destp, '"', '('))) {
+		in_brace = 1;
+		srcp = destp + 1;
+		while (*srcp) {
+			if (*srcp == '(')
+				in_brace++;
+			else if (*srcp == ')')
+				in_brace--;
+			srcp++;
+			if (in_brace == 0)
+				break;
+		}
+		while (isspace(*srcp)) srcp++;
+		memmove(destp, srcp, strlen(srcp) + 1);
+	}
+}
+
+gchar *strchr_with_skip_quote(const gchar *str, gint quote_chr, gint c)
+{
+	gboolean in_quote = FALSE;
+
+	while (*str) {
+		if (*str == c && !in_quote)
+			return (gchar *)str;
+		if (*str == quote_chr)
+			in_quote ^= TRUE;
+		str++;
+	}
+
+	return NULL;
+}
+
+gchar *strrchr_with_skip_quote(const gchar *str, gint quote_chr, gint c)
+{
+	gboolean in_quote = FALSE;
+	const gchar *p;
+
+	p = str + strlen(str) - 1;
+	while (p >= str) {
+		if (*p == c && !in_quote)
+			return (gchar *)p;
+		if (*p == quote_chr)
+			in_quote ^= TRUE;
+		p--;
+	}
+
+	return NULL;
+}
+
+void extract_address(gchar *str)
+{
+	eliminate_address_comment(str);
+	if (strchr_with_skip_quote(str, '"', '<'))
+		extract_parenthesis_with_skip_quote(str, '"', '<', '>');
+	g_strstrip(str);
+}
+
+void extract_list_id_str(gchar *str)
+{
+	if (strchr_with_skip_quote(str, '"', '<'))
+		extract_parenthesis_with_skip_quote(str, '"', '<', '>');
+	g_strstrip(str);
+}
+
+GSList *address_list_append(GSList *addr_list, const gchar *str)
+{
+	gchar *work;
+	gchar *workp;
+
+	if (!str) return addr_list;
+
+	Xstrdup_a(work, str, return addr_list);
+
+	eliminate_address_comment(work);
+	workp = work;
+
+	while (workp && *workp) {
+		gchar *p, *next;
+
+		if ((p = strchr_with_skip_quote(workp, '"', ','))) {
+			*p = '\0';
+			next = p + 1;
+		} else
+			next = NULL;
+
+		if (strchr_with_skip_quote(workp, '"', '<'))
+			extract_parenthesis_with_skip_quote
+				(workp, '"', '<', '>');
+
+		g_strstrip(workp);
+		if (*workp)
+			addr_list = g_slist_append(addr_list, g_strdup(workp));
+
+		workp = next;
+	}
+
+	return addr_list;
+}
+
+GSList *references_list_append(GSList *msgid_list, const gchar *str)
+{
+	const gchar *strp;
+
+	if (!str) return msgid_list;
+	strp = str;
+
+	while (strp && *strp) {
+		const gchar *start, *end;
+		gchar *msgid;
+
+		if ((start = strchr(strp, '<')) != NULL) {
+			end = strchr(start + 1, '>');
+			if (!end) break;
+		} else
+			break;
+
+		msgid = g_strndup(start + 1, end - start - 1);
+		g_strstrip(msgid);
+		if (*msgid)
+			msgid_list = g_slist_append(msgid_list, msgid);
+		else
+			g_free(msgid);
+
+		strp = end + 1;
+	}
+
+	return msgid_list;
+}
+
+GSList *newsgroup_list_append(GSList *group_list, const gchar *str)
+{
+	gchar *work;
+	gchar *workp;
+
+	if (!str) return group_list;
+
+	Xstrdup_a(work, str, return group_list);
+
+	workp = work;
+
+	while (workp && *workp) {
+		gchar *p, *next;
+
+		if ((p = strchr_with_skip_quote(workp, '"', ','))) {
+			*p = '\0';
+			next = p + 1;
+		} else
+			next = NULL;
+
+		g_strstrip(workp);
+		if (*workp)
+			group_list = g_slist_append(group_list,
+						    g_strdup(workp));
+
+		workp = next;
+	}
+
+	return group_list;
+}
+
+GList *add_history(GList *list, const gchar *str)
+{
+	GList *old;
+
+	g_return_val_if_fail(str != NULL, list);
+
+	old = g_list_find_custom(list, (gpointer)str, (GCompareFunc)strcmp2);
+	if (old) {
+		g_free(old->data);
+		list = g_list_remove(list, old->data);
+	} else if (g_list_length(list) >= MAX_HISTORY_SIZE) {
+		GList *last;
+
+		last = g_list_last(list);
+		if (last) {
+			g_free(last->data);
+			g_list_remove(list, last->data);
+		}
+	}
+
+	list = g_list_prepend(list, g_strdup(str));
+
+	return list;
+}
+
+void remove_return(gchar *str)
+{
+	register gchar *p = str;
+
+	while (*p) {
+		if (*p == '\n' || *p == '\r')
+			memmove(p, p + 1, strlen(p));
+		else
+			p++;
+	}
+}
+
+void remove_space(gchar *str)
+{
+	register guchar *p = str;
+	register gint spc;
+
+	while (*p) {
+		spc = 0;
+		while (isspace(*(p + spc)))
+			spc++;
+		if (spc)
+			memmove(p, p + spc, strlen(p + spc) + 1);
+		else
+			p++;
+	}
+}
+
+void unfold_line(gchar *str)
+{
+	register guchar *p = str;
+	register gint spc;
+
+	while (*p) {
+		if (*p == '\n' || *p == '\r') {
+			*p++ = ' ';
+			spc = 0;
+			while (isspace(*(p + spc)))
+				spc++;
+			if (spc)
+				memmove(p, p + spc, strlen(p + spc) + 1);
+		} else
+			p++;
+	}
+}
+
+void subst_char(gchar *str, gchar orig, gchar subst)
+{
+	register gchar *p = str;
+
+	while (*p) {
+		if (*p == orig)
+			*p = subst;
+		p++;
+	}
+}
+
+void subst_chars(gchar *str, gchar *orig, gchar subst)
+{
+	register gchar *p = str;
+
+	while (*p) {
+		if (strchr(orig, *p) != NULL)
+			*p = subst;
+		p++;
+	}
+}
+
+void subst_for_filename(gchar *str)
+{
+	subst_chars(str, " \t\r\n\"'/\\", '_');
+}
+
+gboolean is_header_line(const gchar *str)
+{
+	if (str[0] == ':') return FALSE;
+
+	while (*str != '\0' && *str != ' ') {
+		if (*str == ':')
+			return TRUE;
+		str++;
+	}
+
+	return FALSE;
+}
+
+gboolean is_ascii_str(const guchar *str)
+{
+	while (*str != '\0') {
+		if (*str != '\t' && *str != ' ' &&
+		    *str != '\r' && *str != '\n' &&
+		    (*str < 32 || *str >= 127))
+			return FALSE;
+		str++;
+	}
+
+	return TRUE;
+}
+
+gint get_quote_level(const gchar *str)
+{
+	const guchar *first_pos;
+	const guchar *last_pos;
+	const guchar *p = str;
+	gint quote_level = -1;
+
+	/* speed up line processing by only searching to the last '>' */
+	if ((first_pos = strchr(str, '>')) != NULL) {
+		/* skip a line if it contains a '<' before the initial '>' */
+		if (memchr(str, '<', first_pos - (const guchar *)str) != NULL)
+			return -1;
+		last_pos = strrchr(first_pos, '>');
+	} else
+		return -1;
+
+	while (p <= last_pos) {
+		while (p < last_pos) {
+			if (isspace(*p))
+				p++;
+			else
+				break;
+		}
+
+		if (*p == '>')
+			quote_level++;
+		else if (*p != '-' && !isspace(*p) && p <= last_pos) {
+			/* any characters are allowed except '-' and space */
+			while (*p != '-' && *p != '>' && !isspace(*p) &&
+			       p < last_pos)
+				p++;
+			if (*p == '>')
+				quote_level++;
+			else
+				break;
+		}
+
+		p++;
+	}
+
+	return quote_level;
+}
+
+gchar *strstr_with_skip_quote(const gchar *haystack, const gchar *needle)
+{
+	register guint haystack_len, needle_len;
+	gboolean in_squote = FALSE, in_dquote = FALSE;
+
+	haystack_len = strlen(haystack);
+	needle_len   = strlen(needle);
+
+	if (haystack_len < needle_len || needle_len == 0)
+		return NULL;
+
+	while (haystack_len >= needle_len) {
+		if (!in_squote && !in_dquote &&
+		    !strncmp(haystack, needle, needle_len))
+			return (gchar *)haystack;
+
+		/* 'foo"bar"' -> foo"bar"
+		   "foo'bar'" -> foo'bar' */
+		if (*haystack == '\'') {
+			if (in_squote)
+				in_squote = FALSE;
+			else if (!in_dquote)
+				in_squote = TRUE;
+		} else if (*haystack == '\"') {
+			if (in_dquote)
+				in_dquote = FALSE;
+			else if (!in_squote)
+				in_dquote = TRUE;
+		}
+
+		haystack++;
+		haystack_len--;
+	}
+
+	return NULL;
+}
+
+gchar *strchr_parenthesis_close(const gchar *str, gchar op, gchar cl)
+{
+	const gchar *p;
+	gchar quote_chr = '"';
+	gint in_brace;
+	gboolean in_quote = FALSE;
+
+	p = str;
+
+	if ((p = strchr_with_skip_quote(p, quote_chr, op))) {
+		p++;
+		in_brace = 1;
+		while (*p) {
+			if (*p == op && !in_quote)
+				in_brace++;
+			else if (*p == cl && !in_quote)
+				in_brace--;
+			else if (*p == quote_chr)
+				in_quote ^= TRUE;
+
+			if (in_brace == 0)
+				return (gchar *)p;
+
+			p++;
+		}
+	}
+
+	return NULL;
+}
+
+gchar **strsplit_parenthesis(const gchar *str, gchar op, gchar cl,
+			     gint max_tokens)
+{
+	GSList *string_list = NULL, *slist;
+	gchar **str_array;
+	const gchar *s_op, *s_cl;
+	guint i, n = 1;
+
+	g_return_val_if_fail(str != NULL, NULL);
+
+	if (max_tokens < 1)
+		max_tokens = G_MAXINT;
+
+	s_op = strchr_with_skip_quote(str, '"', op);
+	if (!s_op) return NULL;
+	str = s_op;
+	s_cl = strchr_parenthesis_close(str, op, cl);
+	if (s_cl) {
+		do {
+			guint len;
+			gchar *new_string;
+
+			str++;
+			len = s_cl - str;
+			new_string = g_new(gchar, len + 1);
+			strncpy(new_string, str, len);
+			new_string[len] = 0;
+			string_list = g_slist_prepend(string_list, new_string);
+			n++;
+			str = s_cl + 1;
+
+			while (*str && isspace(*(guchar *)str)) str++;
+			if (*str != op) {
+				string_list = g_slist_prepend(string_list,
+							      g_strdup(""));
+				n++;
+				s_op = strchr_with_skip_quote(str, '"', op);
+				if (!--max_tokens || !s_op) break;
+				str = s_op;
+			} else
+				s_op = str;
+			s_cl = strchr_parenthesis_close(str, op, cl);
+		} while (--max_tokens && s_cl);
+	}
+
+	str_array = g_new(gchar*, n);
+
+	i = n - 1;
+
+	str_array[i--] = NULL;
+	for (slist = string_list; slist; slist = slist->next)
+		str_array[i--] = slist->data;
+
+	g_slist_free(string_list);
+
+	return str_array;
+}
+
+gchar **strsplit_with_quote(const gchar *str, const gchar *delim,
+			    gint max_tokens)
+{
+	GSList *string_list = NULL, *slist;
+	gchar **str_array, *s, *new_str;
+	guint i, n = 1, len;
+
+	g_return_val_if_fail(str != NULL, NULL);
+	g_return_val_if_fail(delim != NULL, NULL);
+
+	if (max_tokens < 1)
+		max_tokens = G_MAXINT;
+
+	s = strstr_with_skip_quote(str, delim);
+	if (s) {
+		guint delimiter_len = strlen(delim);
+
+		do {
+			len = s - str;
+			new_str = g_strndup(str, len);
+
+			if (new_str[0] == '\'' || new_str[0] == '\"') {
+				if (new_str[len - 1] == new_str[0]) {
+					new_str[len - 1] = '\0';
+					memmove(new_str, new_str + 1, len - 1);
+				}
+			}
+			string_list = g_slist_prepend(string_list, new_str);
+			n++;
+			str = s + delimiter_len;
+			s = strstr_with_skip_quote(str, delim);
+		} while (--max_tokens && s);
+	}
+
+	if (*str) {
+		new_str = g_strdup(str);
+		if (new_str[0] == '\'' || new_str[0] == '\"') {
+			len = strlen(str);
+			if (new_str[len - 1] == new_str[0]) {
+				new_str[len - 1] = '\0';
+				memmove(new_str, new_str + 1, len - 1);
+			}
+		}
+		string_list = g_slist_prepend(string_list, new_str);
+		n++;
+	}
+
+	str_array = g_new(gchar*, n);
+
+	i = n - 1;
+
+	str_array[i--] = NULL;
+	for (slist = string_list; slist; slist = slist->next)
+		str_array[i--] = slist->data;
+
+	g_slist_free(string_list);
+
+	return str_array;
+}
+
+gchar *get_abbrev_newsgroup_name(const gchar *group, gint len)
+{
+	gchar *abbrev_group;
+	gchar *ap;
+	const gchar *p = group;
+	const gchar *last;
+
+	last = group + strlen(group);
+	abbrev_group = ap = g_malloc(strlen(group) + 1);
+
+	while (*p) {
+		while (*p == '.')
+			*ap++ = *p++;
+		if ((ap - abbrev_group) + (last - p) > len && strchr(p, '.')) {
+			*ap++ = *p++;
+			while (*p != '.') p++;
+		} else {
+			strcpy(ap, p);
+			return abbrev_group;
+		}
+	}
+
+	*ap = '\0';
+	return abbrev_group;
+}
+
+gchar *trim_string(const gchar *str, gint len)
+{
+	const gchar *p = str;
+	gint mb_len;
+	gchar *new_str;
+	gint new_len = 0;
+
+	if (!str) return NULL;
+	if (strlen(str) <= len)
+		return g_strdup(str);
+
+	while (*p != '\0') {
+		mb_len = mblen(p, MB_LEN_MAX);
+		if (mb_len == 0)
+			break;
+		else if (mb_len < 0)
+			return g_strdup(str);
+		else if (new_len + mb_len > len)
+			break;
+
+		new_len += mb_len;
+		p += mb_len;
+	}
+
+	Xstrndup_a(new_str, str, new_len, return g_strdup(str));
+	return g_strconcat(new_str, "...", NULL);
+}
+
+gchar *trim_string_before(const gchar *str, gint len)
+{
+	const gchar *p = str;
+	gint mb_len;
+	gint new_len;
+
+	if (!str) return NULL;
+	if ((new_len = strlen(str)) <= len)
+		return g_strdup(str);
+
+	while (*p != '\0') {
+		mb_len = mblen(p, MB_LEN_MAX);
+		if (mb_len == 0)
+			break;
+		else if (mb_len < 0)
+			return g_strdup(str);
+
+		new_len -= mb_len;
+		p += mb_len;
+
+		if (new_len <= len)
+			break;
+	}
+
+	return g_strconcat("...", p, NULL);
+}
+
+GList *uri_list_extract_filenames(const gchar *uri_list)
+{
+	GList *result = NULL;
+	const guchar *p, *q;
+	gchar *file;
+
+	p = uri_list;
+
+	while (p) {
+		if (*p != '#') {
+			while (isspace(*p)) p++;
+			if (!strncmp(p, "file:", 5)) {
+				p += 5;
+				q = p;
+				while (*q && *q != '\n' && *q != '\r') q++;
+
+				if (q > p) {
+					q--;
+					while (q > p && isspace(*q)) q--;
+					file = g_malloc(q - p + 2);
+					strncpy(file, p, q - p + 1);
+					file[q - p + 1] = '\0';
+					result = g_list_append(result,file);
+				}
+			}
+		}
+		p = strchr(p, '\n');
+		if (p) p++;
+	}
+
+	return result;
+}
+
+#define HEX_TO_INT(val, hex) \
+{ \
+	gchar c = hex; \
+ \
+	if ('0' <= c && c <= '9') { \
+		val = c - '0'; \
+	} else if ('a' <= c && c <= 'f') { \
+		val = c - 'a' + 10; \
+	} else if ('A' <= c && c <= 'F') { \
+		val = c - 'A' + 10; \
+	} else { \
+		val = 0; \
+	} \
+}
+
+/* Converts two-digit hexadecimal to decimal. Used for unescaping escaped
+ * characters.
+ */
+static gint axtoi(const gchar *hex_str)
+{
+	gint hi, lo;
+
+	HEX_TO_INT(hi, hex_str[0]);
+	HEX_TO_INT(lo, hex_str[1]);
+
+	return (hi << 4) + lo;
+}
+
+gboolean is_uri_string(const gchar *str)
+{
+	return (g_strncasecmp(str, "http://", 7) == 0 ||
+		g_strncasecmp(str, "https://", 8) == 0 ||
+		g_strncasecmp(str, "ftp://", 6) == 0 ||
+		g_strncasecmp(str, "www.", 4) == 0);
+}
+
+gchar *get_uri_path(const gchar *uri)
+{
+	if (g_strncasecmp(uri, "http://", 7) == 0)
+		return (gchar *)(uri + 7);
+	else if (g_strncasecmp(uri, "https://", 8) == 0)
+		return (gchar *)(uri + 8);
+	else if (g_strncasecmp(uri, "ftp://", 6) == 0)
+		return (gchar *)(uri + 6);
+	else
+		return (gchar *)uri;
+}
+
+/* Decodes URL-Encoded strings (i.e. strings in which spaces are replaced by
+ * plusses, and escape characters are used)
+ */
+void decode_uri(gchar *decoded_uri, const gchar *encoded_uri)
+{
+	gchar *dec = decoded_uri;
+	const gchar *enc = encoded_uri;
+
+	while (*enc) {
+		if (*enc == '%') {
+			enc++;
+			if (isxdigit((guchar)enc[0]) &&
+			    isxdigit((guchar)enc[1])) {
+				*dec = axtoi(enc);
+				dec++;
+				enc += 2;
+			}
+		} else {
+			if (*enc == '+')
+				*dec = ' ';
+			else
+				*dec = *enc;
+			dec++;
+			enc++;
+		}
+	}
+
+	*dec = '\0';
+}
+
+gint scan_mailto_url(const gchar *mailto, gchar **to, gchar **cc, gchar **bcc,
+		     gchar **subject, gchar **body)
+{
+	gchar *tmp_mailto;
+	gchar *p;
+
+	Xstrdup_a(tmp_mailto, mailto, return -1);
+
+	if (!strncmp(tmp_mailto, "mailto:", 7))
+		tmp_mailto += 7;
+
+	p = strchr(tmp_mailto, '?');
+	if (p) {
+		*p = '\0';
+		p++;
+	}
+
+	if (to && !*to)
+		*to = g_strdup(tmp_mailto);
+
+	while (p) {
+		gchar *field, *value;
+
+		field = p;
+
+		p = strchr(p, '=');
+		if (!p) break;
+		*p = '\0';
+		p++;
+
+		value = p;
+
+		p = strchr(p, '&');
+		if (p) {
+			*p = '\0';
+			p++;
+		}
+
+		if (*value == '\0') continue;
+
+		if (cc && !*cc && !g_strcasecmp(field, "cc")) {
+			*cc = g_strdup(value);
+		} else if (bcc && !*bcc && !g_strcasecmp(field, "bcc")) {
+			*bcc = g_strdup(value);
+		} else if (subject && !*subject &&
+			   !g_strcasecmp(field, "subject")) {
+			*subject = g_malloc(strlen(value) + 1);
+			decode_uri(*subject, value);
+		} else if (body && !*body && !g_strcasecmp(field, "body")) {
+			*body = g_malloc(strlen(value) + 1);
+			decode_uri(*body, value);
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * We need this wrapper around g_get_home_dir(), so that
+ * we can fix some Windoze things here.  Should be done in glibc of course
+ * but as long as we are not able to do our own extensions to glibc, we do 
+ * it here.
+ */
+const gchar *get_home_dir(void)
+{
+#if HAVE_DOSISH_SYSTEM
+    static gchar *home_dir;
+
+    if (!home_dir) {
+        home_dir = read_w32_registry_string(NULL,
+                                            "Software\\Sylpheed", "HomeDir" );
+        if (!home_dir || !*home_dir) {
+            if (getenv ("HOMEDRIVE") && getenv("HOMEPATH")) {
+                const char *s = g_get_home_dir();
+                if (s && *s)
+                    home_dir = g_strdup (s);
+            }
+            if (!home_dir || !*home_dir) 
+                home_dir = g_strdup ("c:\\sylpheed");
+        }
+        debug_print("initialized home_dir to `%s'\n", home_dir);
+    }
+    return home_dir;
+#else /* standard glib */
+    return g_get_home_dir();
+#endif
+}
+
+const gchar *get_rc_dir(void)
+{
+	static gchar *rc_dir = NULL;
+
+	if (!rc_dir)
+		rc_dir = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
+				     RC_DIR, NULL);
+
+	return rc_dir;
+}
+
+const gchar *get_news_cache_dir(void)
+{
+	static gchar *news_cache_dir = NULL;
+
+	if (!news_cache_dir)
+		news_cache_dir = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
+					     NEWS_CACHE_DIR, NULL);
+
+	return news_cache_dir;
+}
+
+const gchar *get_imap_cache_dir(void)
+{
+	static gchar *imap_cache_dir = NULL;
+
+	if (!imap_cache_dir)
+		imap_cache_dir = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
+					     IMAP_CACHE_DIR, NULL);
+
+	return imap_cache_dir;
+}
+
+const gchar *get_mime_tmp_dir(void)
+{
+	static gchar *mime_tmp_dir = NULL;
+
+	if (!mime_tmp_dir)
+		mime_tmp_dir = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
+					   MIME_TMP_DIR, NULL);
+
+	return mime_tmp_dir;
+}
+
+const gchar *get_template_dir(void)
+{
+	static gchar *template_dir = NULL;
+
+	if (!template_dir)
+		template_dir = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
+					   TEMPLATE_DIR, NULL);
+
+	return template_dir;
+}
+
+const gchar *get_tmp_dir(void)
+{
+	static gchar *tmp_dir = NULL;
+
+	if (!tmp_dir)
+		tmp_dir = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
+				      TMP_DIR, NULL);
+
+	return tmp_dir;
+}
+
+gchar *get_tmp_file(void)
+{
+	gchar *tmp_file;
+	static guint32 id = 0;
+
+	tmp_file = g_strdup_printf("%s%ctmpfile.%08x",
+				   get_tmp_dir(), G_DIR_SEPARATOR, id++);
+
+	return tmp_file;
+}
+
+const gchar *get_domain_name(void)
+{
+	static gchar *domain_name = NULL;
+
+	if (!domain_name) {
+		gchar buf[128] = "";
+		struct hostent *hp;
+
+		if (gethostname(buf, sizeof(buf)) < 0) {
+			perror("gethostname");
+			domain_name = "unknown";
+		} else {
+			buf[sizeof(buf) - 1] = '\0';
+			if ((hp = my_gethostbyname(buf)) == NULL) {
+				perror("gethostbyname");
+				domain_name = g_strdup(buf);
+			} else {
+				domain_name = g_strdup(hp->h_name);
+			}
+		}
+
+		debug_print("domain name = %s\n", domain_name);
+	}
+
+	return domain_name;
+}
+
+off_t get_file_size(const gchar *file)
+{
+	struct stat s;
+
+	if (stat(file, &s) < 0) {
+		FILE_OP_ERROR(file, "stat");
+		return -1;
+	}
+
+	return s.st_size;
+}
+
+off_t get_file_size_as_crlf(const gchar *file)
+{
+	FILE *fp;
+	off_t size = 0;
+	gchar buf[BUFFSIZE];
+
+	if ((fp = fopen(file, "rb")) == NULL) {
+		FILE_OP_ERROR(file, "fopen");
+		return -1;
+	}
+
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		strretchomp(buf);
+		size += strlen(buf) + 2;
+	}
+
+	if (ferror(fp)) {
+		FILE_OP_ERROR(file, "fgets");
+		size = -1;
+	}
+
+	fclose(fp);
+
+	return size;
+}
+
+off_t get_left_file_size(FILE *fp)
+{
+	glong pos;
+	glong end;
+	off_t size;
+
+	if ((pos = ftell(fp)) < 0) {
+		perror("ftell");
+		return -1;
+	}
+	if (fseek(fp, 0L, SEEK_END) < 0) {
+		perror("fseek");
+		return -1;
+	}
+	if ((end = ftell(fp)) < 0) {
+		perror("fseek");
+		return -1;
+	}
+	size = end - pos;
+	if (fseek(fp, pos, SEEK_SET) < 0) {
+		perror("fseek");
+		return -1;
+	}
+
+	return size;
+}
+
+gboolean file_exist(const gchar *file, gboolean allow_fifo)
+{
+	struct stat s;
+
+	if (file == NULL)
+		return FALSE;
+
+	if (stat(file, &s) < 0) {
+		if (ENOENT != errno) FILE_OP_ERROR(file, "stat");
+		return FALSE;
+	}
+
+	if (S_ISREG(s.st_mode) || (allow_fifo && S_ISFIFO(s.st_mode)))
+		return TRUE;
+
+	return FALSE;
+}
+
+gboolean is_dir_exist(const gchar *dir)
+{
+	struct stat s;
+
+	if (dir == NULL)
+		return FALSE;
+
+	if (stat(dir, &s) < 0) {
+		if (ENOENT != errno) FILE_OP_ERROR(dir, "stat");
+		return FALSE;
+	}
+
+	if (S_ISDIR(s.st_mode))
+		return TRUE;
+
+	return FALSE;
+}
+
+gboolean is_file_entry_exist(const gchar *file)
+{
+	struct stat s;
+
+	if (file == NULL)
+		return FALSE;
+
+	if (stat(file, &s) < 0) {
+		if (ENOENT != errno) FILE_OP_ERROR(file, "stat");
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+gboolean dirent_is_regular_file(struct dirent *d)
+{
+	struct stat s;
+
+#ifdef HAVE_DIRENT_D_TYPE
+	if (d->d_type == DT_REG)
+		return TRUE;
+	else if (d->d_type != DT_UNKNOWN)
+		return FALSE;
+#endif
+
+	return (stat(d->d_name, &s) == 0 && S_ISREG(s.st_mode));
+}
+
+gboolean dirent_is_directory(struct dirent *d)
+{
+	struct stat s;
+
+#ifdef HAVE_DIRENT_D_TYPE
+	if (d->d_type == DT_DIR)
+		return TRUE;
+	else if (d->d_type != DT_UNKNOWN)
+		return FALSE;
+#endif
+
+	return (stat(d->d_name, &s) == 0 && S_ISDIR(s.st_mode));
+}
+
+gint change_dir(const gchar *dir)
+{
+	gchar *prevdir = NULL;
+
+	if (debug_mode)
+		prevdir = g_get_current_dir();
+
+	if (chdir(dir) < 0) {
+		FILE_OP_ERROR(dir, "chdir");
+		if (debug_mode) g_free(prevdir);
+		return -1;
+	} else if (debug_mode) {
+		gchar *cwd;
+
+		cwd = g_get_current_dir();
+		if (strcmp(prevdir, cwd) != 0)
+			g_print("current dir: %s\n", cwd);
+		g_free(cwd);
+		g_free(prevdir);
+	}
+
+	return 0;
+}
+
+gint make_dir(const gchar *dir)
+{
+	if (mkdir(dir, S_IRWXU) < 0) {
+		FILE_OP_ERROR(dir, "mkdir");
+		return -1;
+	}
+	if (chmod(dir, S_IRWXU) < 0)
+		FILE_OP_ERROR(dir, "chmod");
+
+	return 0;
+}
+
+gint make_dir_hier(const gchar *dir)
+{
+	gchar *parent_dir;
+	const gchar *p;
+
+	for (p = dir; (p = strchr(p, G_DIR_SEPARATOR)) != NULL; p++) {
+		parent_dir = g_strndup(dir, p - dir);
+		if (*parent_dir != '\0') {
+			if (!is_dir_exist(parent_dir)) {
+				if (make_dir(parent_dir) < 0) {
+					g_free(parent_dir);
+					return -1;
+				}
+			}
+		}
+		g_free(parent_dir);
+	}
+
+	if (!is_dir_exist(dir)) {
+		if (make_dir(dir) < 0)
+			return -1;
+	}
+
+	return 0;
+}
+
+gint remove_all_files(const gchar *dir)
+{
+	DIR *dp;
+	struct dirent *d;
+	gchar *prev_dir;
+
+	prev_dir = g_get_current_dir();
+
+	if (chdir(dir) < 0) {
+		FILE_OP_ERROR(dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	if ((dp = opendir(".")) == NULL) {
+		FILE_OP_ERROR(dir, "opendir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	while ((d = readdir(dp)) != NULL) {
+		if (!strcmp(d->d_name, ".") ||
+		    !strcmp(d->d_name, ".."))
+			continue;
+
+		if (unlink(d->d_name) < 0)
+			FILE_OP_ERROR(d->d_name, "unlink");
+	}
+
+	closedir(dp);
+
+	if (chdir(prev_dir) < 0) {
+		FILE_OP_ERROR(prev_dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	g_free(prev_dir);
+
+	return 0;
+}
+
+gint remove_numbered_files(const gchar *dir, guint first, guint last)
+{
+	DIR *dp;
+	struct dirent *d;
+	gchar *prev_dir;
+	gint fileno;
+
+	prev_dir = g_get_current_dir();
+
+	if (chdir(dir) < 0) {
+		FILE_OP_ERROR(dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	if ((dp = opendir(".")) == NULL) {
+		FILE_OP_ERROR(dir, "opendir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	while ((d = readdir(dp)) != NULL) {
+		fileno = to_number(d->d_name);
+		if (fileno >= 0 && first <= fileno && fileno <= last) {
+			if (is_dir_exist(d->d_name))
+				continue;
+			if (unlink(d->d_name) < 0)
+				FILE_OP_ERROR(d->d_name, "unlink");
+		}
+	}
+
+	closedir(dp);
+
+	if (chdir(prev_dir) < 0) {
+		FILE_OP_ERROR(prev_dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	g_free(prev_dir);
+
+	return 0;
+}
+
+gint remove_all_numbered_files(const gchar *dir)
+{
+	return remove_numbered_files(dir, 0, UINT_MAX);
+}
+
+gint remove_expired_files(const gchar *dir, guint hours)
+{
+	DIR *dp;
+	struct dirent *d;
+	struct stat s;
+	gchar *prev_dir;
+	gint fileno;
+	time_t mtime, now, expire_time;
+
+	prev_dir = g_get_current_dir();
+
+	if (chdir(dir) < 0) {
+		FILE_OP_ERROR(dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	if ((dp = opendir(".")) == NULL) {
+		FILE_OP_ERROR(dir, "opendir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	now = time(NULL);
+	expire_time = hours * 60 * 60;
+
+	while ((d = readdir(dp)) != NULL) {
+		fileno = to_number(d->d_name);
+		if (fileno >= 0) {
+			if (stat(d->d_name, &s) < 0) {
+				FILE_OP_ERROR(d->d_name, "stat");
+				continue;
+			}
+			if (S_ISDIR(s.st_mode))
+				continue;
+			mtime = MAX(s.st_mtime, s.st_atime);
+			if (now - mtime > expire_time) {
+				if (unlink(d->d_name) < 0)
+					FILE_OP_ERROR(d->d_name, "unlink");
+			}
+		}
+	}
+
+	closedir(dp);
+
+	if (chdir(prev_dir) < 0) {
+		FILE_OP_ERROR(prev_dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	g_free(prev_dir);
+
+	return 0;
+}
+
+gint remove_dir_recursive(const gchar *dir)
+{
+	struct stat s;
+	DIR *dp;
+	struct dirent *d;
+	gchar *prev_dir;
+
+	/* g_print("dir = %s\n", dir); */
+
+	if (stat(dir, &s) < 0) {
+		FILE_OP_ERROR(dir, "stat");
+		if (ENOENT == errno) return 0;
+		return -1;
+	}
+
+	if (!S_ISDIR(s.st_mode)) {
+		if (unlink(dir) < 0) {
+			FILE_OP_ERROR(dir, "unlink");
+			return -1;
+		}
+
+		return 0;
+	}
+
+	prev_dir = g_get_current_dir();
+	/* g_print("prev_dir = %s\n", prev_dir); */
+
+	if (!path_cmp(prev_dir, dir)) {
+		g_free(prev_dir);
+		if (chdir("..") < 0) {
+			FILE_OP_ERROR(dir, "chdir");
+			return -1;
+		}
+		prev_dir = g_get_current_dir();
+	}
+
+	if (chdir(dir) < 0) {
+		FILE_OP_ERROR(dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	if ((dp = opendir(".")) == NULL) {
+		FILE_OP_ERROR(dir, "opendir");
+		chdir(prev_dir);
+		g_free(prev_dir);
+		return -1;
+	}
+
+	/* remove all files in the directory */
+	while ((d = readdir(dp)) != NULL) {
+		if (!strcmp(d->d_name, ".") ||
+		    !strcmp(d->d_name, ".."))
+			continue;
+
+		/* g_print("removing %s\n", d->d_name); */
+
+		if (dirent_is_directory(d)) {
+			if (remove_dir_recursive(d->d_name) < 0) {
+				g_warning("can't remove directory\n");
+				return -1;
+			}
+		} else {
+			if (unlink(d->d_name) < 0)
+				FILE_OP_ERROR(d->d_name, "unlink");
+		}
+	}
+
+	closedir(dp);
+
+	if (chdir(prev_dir) < 0) {
+		FILE_OP_ERROR(prev_dir, "chdir");
+		g_free(prev_dir);
+		return -1;
+	}
+
+	g_free(prev_dir);
+
+	if (rmdir(dir) < 0) {
+		FILE_OP_ERROR(dir, "rmdir");
+		return -1;
+	}
+
+	return 0;
+}
+
+gint copy_file(const gchar *src, const gchar *dest, gboolean keep_backup)
+{
+	FILE *src_fp, *dest_fp;
+	gint n_read;
+	gchar buf[BUFSIZ];
+	gchar *dest_bak = NULL;
+	gboolean err = FALSE;
+
+	if ((src_fp = fopen(src, "rb")) == NULL) {
+		FILE_OP_ERROR(src, "fopen");
+		return -1;
+	}
+	if (is_file_exist(dest)) {
+		dest_bak = g_strconcat(dest, ".bak", NULL);
+		if (rename(dest, dest_bak) < 0) {
+			FILE_OP_ERROR(dest, "rename");
+			fclose(src_fp);
+			g_free(dest_bak);
+			return -1;
+		}
+	}
+
+	if ((dest_fp = fopen(dest, "wb")) == NULL) {
+		FILE_OP_ERROR(dest, "fopen");
+		fclose(src_fp);
+		if (dest_bak) {
+			if (rename(dest_bak, dest) < 0)
+				FILE_OP_ERROR(dest_bak, "rename");
+			g_free(dest_bak);
+		}
+		return -1;
+	}
+
+	if (change_file_mode_rw(dest_fp, dest) < 0) {
+		FILE_OP_ERROR(dest, "chmod");
+		g_warning(_("can't change file mode\n"));
+	}
+
+	while ((n_read = fread(buf, sizeof(gchar), sizeof(buf), src_fp)) > 0) {
+		if (n_read < sizeof(buf) && ferror(src_fp))
+			break;
+		if (fwrite(buf, n_read, 1, dest_fp) < 1) {
+			g_warning(_("writing to %s failed.\n"), dest);
+			fclose(dest_fp);
+			fclose(src_fp);
+			unlink(dest);
+			if (dest_bak) {
+				if (rename(dest_bak, dest) < 0)
+					FILE_OP_ERROR(dest_bak, "rename");
+				g_free(dest_bak);
+			}
+			return -1;
+		}
+	}
+
+	if (ferror(src_fp)) {
+		FILE_OP_ERROR(src, "fread");
+		err = TRUE;
+	}
+	fclose(src_fp);
+	if (fclose(dest_fp) == EOF) {
+		FILE_OP_ERROR(dest, "fclose");
+		err = TRUE;
+	}
+
+	if (err) {
+		unlink(dest);
+		if (dest_bak) {
+			if (rename(dest_bak, dest) < 0)
+				FILE_OP_ERROR(dest_bak, "rename");
+			g_free(dest_bak);
+		}
+		return -1;
+	}
+
+	if (keep_backup == FALSE && dest_bak)
+		unlink(dest_bak);
+
+	g_free(dest_bak);
+
+	return 0;
+}
+
+gint move_file(const gchar *src, const gchar *dest, gboolean overwrite)
+{
+	if (overwrite == FALSE && is_file_exist(dest)) {
+		g_warning("move_file(): file %s already exists.", dest);
+		return -1;
+	}
+
+	if (rename(src, dest) == 0) return 0;
+
+	if (EXDEV != errno) {
+		FILE_OP_ERROR(src, "rename");
+		return -1;
+	}
+
+	if (copy_file(src, dest, FALSE) < 0) return -1;
+
+	unlink(src);
+
+	return 0;
+}
+
+gint copy_file_part(FILE *fp, off_t offset, size_t length, const gchar *dest)
+{
+	FILE *dest_fp;
+	gint n_read;
+	gint bytes_left, to_read;
+	gchar buf[BUFSIZ];
+	gboolean err = FALSE;
+
+	if (fseek(fp, offset, SEEK_SET) < 0) {
+		perror("fseek");
+		return -1;
+	}
+
+	if ((dest_fp = fopen(dest, "wb")) == NULL) {
+		FILE_OP_ERROR(dest, "fopen");
+		return -1;
+	}
+
+	if (change_file_mode_rw(dest_fp, dest) < 0) {
+		FILE_OP_ERROR(dest, "chmod");
+		g_warning("can't change file mode\n");
+	}
+
+	bytes_left = length;
+	to_read = MIN(bytes_left, sizeof(buf));
+
+	while ((n_read = fread(buf, sizeof(gchar), to_read, fp)) > 0) {
+		if (n_read < to_read && ferror(fp))
+			break;
+		if (fwrite(buf, n_read, 1, dest_fp) < 1) {
+			g_warning(_("writing to %s failed.\n"), dest);
+			fclose(dest_fp);
+			unlink(dest);
+			return -1;
+		}
+		bytes_left -= n_read;
+		if (bytes_left == 0)
+			break;
+		to_read = MIN(bytes_left, sizeof(buf));
+	}
+
+	if (ferror(fp)) {
+		perror("fread");
+		err = TRUE;
+	}
+	if (fclose(dest_fp) == EOF) {
+		FILE_OP_ERROR(dest, "fclose");
+		err = TRUE;
+	}
+
+	if (err) {
+		unlink(dest);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* convert line endings into CRLF. If the last line doesn't end with
+ * linebreak, add it.
+ */
+gchar *canonicalize_str(const gchar *str)
+{
+	const gchar *p;
+	guint new_len = 0;
+	gchar *out, *outp;
+
+	for (p = str; *p != '\0'; ++p) {
+		if (*p != '\r') {
+			++new_len;
+			if (*p == '\n')
+				++new_len;
+		}
+	}
+	if (p == str || *(p - 1) != '\n')
+		new_len += 2;
+
+	out = outp = g_malloc(new_len + 1);
+	for (p = str; *p != '\0'; ++p) {
+		if (*p != '\r') {
+			if (*p == '\n')
+				*outp++ = '\r';
+			*outp++ = *p;
+		}
+	}
+	if (p == str || *(p - 1) != '\n') {
+		*outp++ = '\r';
+		*outp++ = '\n';
+	}
+	*outp = '\0';
+
+	return out;
+}
+
+gint canonicalize_file(const gchar *src, const gchar *dest)
+{
+	FILE *src_fp, *dest_fp;
+	gchar buf[BUFFSIZE];
+	gint len;
+	gboolean err = FALSE;
+	gboolean last_linebreak = FALSE;
+
+	if ((src_fp = fopen(src, "rb")) == NULL) {
+		FILE_OP_ERROR(src, "fopen");
+		return -1;
+	}
+
+	if ((dest_fp = fopen(dest, "wb")) == NULL) {
+		FILE_OP_ERROR(dest, "fopen");
+		fclose(src_fp);
+		return -1;
+	}
+
+	if (change_file_mode_rw(dest_fp, dest) < 0) {
+		FILE_OP_ERROR(dest, "chmod");
+		g_warning("can't change file mode\n");
+	}
+
+	while (fgets(buf, sizeof(buf), src_fp) != NULL) {
+		gint r = 0;
+
+		len = strlen(buf);
+		if (len == 0) break;
+		last_linebreak = FALSE;
+
+		if (buf[len - 1] != '\n') {
+			last_linebreak = TRUE;
+			r = fputs(buf, dest_fp);
+		} else if (len > 1 && buf[len - 1] == '\n' && buf[len - 2] == '\r') {
+			r = fputs(buf, dest_fp);
+		} else {
+			if (len > 1) {
+				r = fwrite(buf, len - 1, 1, dest_fp);
+				if (r != 1)
+					r = EOF;
+			}
+			if (r != EOF)
+				r = fputs("\r\n", dest_fp);
+		}
+
+		if (r == EOF) {
+			g_warning("writing to %s failed.\n", dest);
+			fclose(dest_fp);
+			fclose(src_fp);
+			unlink(dest);
+			return -1;
+		}
+	}
+
+	if (last_linebreak == TRUE) {
+		if (fputs("\r\n", dest_fp) == EOF)
+			err = TRUE;
+	}
+
+	if (ferror(src_fp)) {
+		FILE_OP_ERROR(src, "fgets");
+		err = TRUE;
+	}
+	fclose(src_fp);
+	if (fclose(dest_fp) == EOF) {
+		FILE_OP_ERROR(dest, "fclose");
+		err = TRUE;
+	}
+
+	if (err) {
+		unlink(dest);
+		return -1;
+	}
+
+	return 0;
+}
+
+gint canonicalize_file_replace(const gchar *file)
+{
+	gchar *tmp_file;
+
+	tmp_file = get_tmp_file();
+
+	if (canonicalize_file(file, tmp_file) < 0) {
+		g_free(tmp_file);
+		return -1;
+	}
+
+	if (move_file(tmp_file, file, TRUE) < 0) {
+		g_warning("can't replace %s .\n", file);
+		unlink(tmp_file);
+		g_free(tmp_file);
+		return -1;
+	}
+
+	g_free(tmp_file);
+	return 0;
+}
+
+gint uncanonicalize_file(const gchar *src, const gchar *dest)
+{
+	FILE *src_fp, *dest_fp;
+	gchar buf[BUFFSIZE];
+	gboolean err = FALSE;
+
+	if ((src_fp = fopen(src, "rb")) == NULL) {
+		FILE_OP_ERROR(src, "fopen");
+		return -1;
+	}
+
+	if ((dest_fp = fopen(dest, "wb")) == NULL) {
+		FILE_OP_ERROR(dest, "fopen");
+		fclose(src_fp);
+		return -1;
+	}
+
+	if (change_file_mode_rw(dest_fp, dest) < 0) {
+		FILE_OP_ERROR(dest, "chmod");
+		g_warning("can't change file mode\n");
+	}
+
+	while (fgets(buf, sizeof(buf), src_fp) != NULL) {
+		strcrchomp(buf);
+		if (fputs(buf, dest_fp) == EOF) {
+			g_warning("writing to %s failed.\n", dest);
+			fclose(dest_fp);
+			fclose(src_fp);
+			unlink(dest);
+			return -1;
+		}
+	}
+
+	if (ferror(src_fp)) {
+		FILE_OP_ERROR(src, "fgets");
+		err = TRUE;
+	}
+	fclose(src_fp);
+	if (fclose(dest_fp) == EOF) {
+		FILE_OP_ERROR(dest, "fclose");
+		err = TRUE;
+	}
+
+	if (err) {
+		unlink(dest);
+		return -1;
+	}
+
+	return 0;
+}
+
+gint uncanonicalize_file_replace(const gchar *file)
+{
+	gchar *tmp_file;
+
+	tmp_file = get_tmp_file();
+
+	if (uncanonicalize_file(file, tmp_file) < 0) {
+		g_free(tmp_file);
+		return -1;
+	}
+
+	if (move_file(tmp_file, file, TRUE) < 0) {
+		g_warning("can't replace %s .\n", file);
+		unlink(tmp_file);
+		g_free(tmp_file);
+		return -1;
+	}
+
+	g_free(tmp_file);
+	return 0;
+}
+
+gchar *normalize_newlines(const gchar *str)
+{
+	const gchar *p = str;
+	gchar *out, *outp;
+
+	out = outp = g_malloc(strlen(str) + 1);
+	for (p = str; *p != '\0'; ++p) {
+		if (*p == '\r') {
+			if (*(p + 1) != '\n')
+				*outp++ = '\n';
+		} else
+			*outp++ = *p;
+	}
+
+	*outp = '\0';
+
+	return out;
+}
+
+gchar *get_outgoing_rfc2822_str(FILE *fp)
+{
+	gchar buf[BUFFSIZE];
+	GString *str;
+	gchar *ret;
+
+	str = g_string_new(NULL);
+
+	/* output header part */
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		strretchomp(buf);
+		if (!g_strncasecmp(buf, "Bcc:", 4)) {
+			gint next;
+
+			for (;;) {
+				next = fgetc(fp);
+				if (next == EOF)
+					break;
+				else if (next != ' ' && next != '\t') {
+					ungetc(next, fp);
+					break;
+				}
+				if (fgets(buf, sizeof(buf), fp) == NULL)
+					break;
+			}
+		} else {
+			g_string_append(str, buf);
+			g_string_append(str, "\r\n");
+			if (buf[0] == '\0')
+				break;
+		}
+	}
+
+	/* output body part */
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		strretchomp(buf);
+		if (buf[0] == '.')
+			g_string_append_c(str, '.');
+		g_string_append(str, buf);
+		g_string_append(str, "\r\n");
+	}
+
+	ret = str->str;
+	g_string_free(str, FALSE);
+
+	return ret;
+}
+
+/*
+ * Create a new boundary in a way that it is very unlikely that this
+ * will occur in the following text.  It would be easy to ensure
+ * uniqueness if everything is either quoted-printable or base64
+ * encoded (note that conversion is allowed), but because MIME bodies
+ * may be nested, it may happen that the same boundary has already
+ * been used. We avoid scanning the message for conflicts and hope the
+ * best.
+ *
+ *   boundary := 0*69<bchars> bcharsnospace
+ *   bchars := bcharsnospace / " "
+ *   bcharsnospace := DIGIT / ALPHA / "'" / "(" / ")" /
+ *                    "+" / "_" / "," / "-" / "." /
+ *                    "/" / ":" / "=" / "?"
+ *
+ * some special characters removed because of buggy MTAs
+ */
+
+gchar *generate_mime_boundary(const gchar *prefix)
+{
+	static gchar tbl[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+			     "abcdefghijklmnopqrstuvwxyz"
+			     "1234567890+_./=";
+	gchar buf_uniq[17];
+	gchar buf_date[64];
+	gint i;
+	gint pid;
+
+	pid = getpid();
+
+	/* We make the boundary depend on the pid, so that all running
+	 * processes generate different values even when they have been
+	 * started within the same second and srandom(time(NULL)) has been
+	 * used.  I can't see whether this is really an advantage but it
+	 * doesn't do any harm.
+	 */
+	for (i = 0; i < sizeof(buf_uniq) - 1; i++)
+		buf_uniq[i] = tbl[(random() ^ pid) % (sizeof(tbl) - 1)];
+	buf_uniq[i] = '\0';
+
+	get_rfc822_date(buf_date, sizeof(buf_date));
+	subst_char(buf_date, ' ', '_');
+	subst_char(buf_date, ',', '_');
+	subst_char(buf_date, ':', '_');
+
+	return g_strdup_printf("%s=_%s_%s", prefix ? prefix : "Multipart",
+			       buf_date, buf_uniq);
+}
+
+gint change_file_mode_rw(FILE *fp, const gchar *file)
+{
+#if HAVE_FCHMOD
+	return fchmod(fileno(fp), S_IRUSR|S_IWUSR);
+#else
+	return chmod(file, S_IRUSR|S_IWUSR);
+#endif
+}
+
+FILE *my_tmpfile(void)
+{
+#if HAVE_MKSTEMP
+	const gchar suffix[] = ".XXXXXX";
+	const gchar *tmpdir;
+	guint tmplen;
+	const gchar *progname;
+	guint proglen;
+	gchar *fname;
+	gint fd;
+	FILE *fp;
+
+	tmpdir = get_tmp_dir();
+	tmplen = strlen(tmpdir);
+	progname = g_get_prgname();
+	proglen = strlen(progname);
+	Xalloca(fname, tmplen + 1 + proglen + sizeof(suffix),
+		return tmpfile());
+
+	memcpy(fname, tmpdir, tmplen);
+	fname[tmplen] = G_DIR_SEPARATOR;
+	memcpy(fname + tmplen + 1, progname, proglen);
+	memcpy(fname + tmplen + 1 + proglen, suffix, sizeof(suffix));
+
+	fd = mkstemp(fname);
+	if (fd < 0)
+		return tmpfile();
+
+	unlink(fname);
+
+	fp = fdopen(fd, "w+b");
+	if (!fp)
+		close(fd);
+	else
+		return fp;
+#endif /* HAVE_MKSTEMP */
+
+	return tmpfile();
+}
+
+FILE *str_open_as_stream(const gchar *str)
+{
+	FILE *fp;
+	size_t len;
+
+	g_return_val_if_fail(str != NULL, NULL);
+
+	fp = my_tmpfile();
+	if (!fp) {
+		FILE_OP_ERROR("str_open_as_stream", "my_tmpfile");
+		return NULL;
+	}
+
+	len = strlen(str);
+	if (len == 0) return fp;
+
+	if (fwrite(str, len, 1, fp) != 1) {
+		FILE_OP_ERROR("str_open_as_stream", "fwrite");
+		fclose(fp);
+		return NULL;
+	}
+
+	rewind(fp);
+	return fp;
+}
+
+gint str_write_to_file(const gchar *str, const gchar *file)
+{
+	FILE *fp;
+	size_t len;
+
+	g_return_val_if_fail(str != NULL, -1);
+	g_return_val_if_fail(file != NULL, -1);
+
+	if ((fp = fopen(file, "wb")) == NULL) {
+		FILE_OP_ERROR(file, "fopen");
+		return -1;
+	}
+
+	len = strlen(str);
+	if (len == 0) {
+		fclose(fp);
+		return 0;
+	}
+
+	if (fwrite(str, len, 1, fp) != 1) {
+		FILE_OP_ERROR(file, "fwrite");
+		fclose(fp);
+		unlink(file);
+		return -1;
+	}
+
+	if (fclose(fp) == EOF) {
+		FILE_OP_ERROR(file, "fclose");
+		unlink(file);
+		return -1;
+	}
+
+	return 0;
+}
+
+gchar *file_read_to_str(const gchar *file)
+{
+	FILE *fp;
+	gchar *str;
+
+	g_return_val_if_fail(file != NULL, NULL);
+
+	if ((fp = fopen(file, "rb")) == NULL) {
+		FILE_OP_ERROR(file, "fopen");
+		return NULL;
+	}
+
+	str = file_read_stream_to_str(fp);
+
+	fclose(fp);
+
+	return str;
+}
+
+gchar *file_read_stream_to_str(FILE *fp)
+{
+	GByteArray *array;
+	gchar buf[BUFSIZ];
+	gint n_read;
+	gchar *str;
+
+	g_return_val_if_fail(fp != NULL, NULL);
+
+	array = g_byte_array_new();
+
+	while ((n_read = fread(buf, sizeof(gchar), sizeof(buf), fp)) > 0) {
+		if (n_read < sizeof(buf) && ferror(fp))
+			break;
+		g_byte_array_append(array, buf, n_read);
+	}
+
+	if (ferror(fp)) {
+		FILE_OP_ERROR("file stream", "fread");
+		g_byte_array_free(array, TRUE);
+		return NULL;
+	}
+
+	buf[0] = '\0';
+	g_byte_array_append(array, buf, 1);
+	str = (gchar *)array->data;
+	g_byte_array_free(array, FALSE);
+
+	return str;
+}
+
+gint execute_async(gchar *const argv[])
+{
+	pid_t pid;
+	gint status;
+
+	if ((pid = fork()) < 0) {
+		perror("fork");
+		return -1;
+	}
+
+	if (pid == 0) {			/* child process */
+		pid_t gch_pid;
+
+		if ((gch_pid = fork()) < 0) {
+			perror("fork");
+			_exit(1);
+		}
+
+		if (gch_pid == 0) {	/* grandchild process */
+			execvp(argv[0], argv);
+
+			perror("execvp");
+			_exit(1);
+		}
+
+		_exit(0);
+	}
+
+	waitpid(pid, &status, 0);
+
+	if (WIFEXITED(status))
+		return WEXITSTATUS(status);
+	else
+		return -1;
+}
+
+gint execute_sync(gchar *const argv[])
+{
+	pid_t pid;
+	gint status;
+
+	if ((pid = fork()) < 0) {
+		perror("fork");
+		return -1;
+	}
+
+	if (pid == 0) {		/* child process */
+		execvp(argv[0], argv);
+
+		perror("execvp");
+		_exit(1);
+	}
+
+	waitpid(pid, &status, 0);
+
+	if (WIFEXITED(status))
+		return WEXITSTATUS(status);
+	else
+		return -1;
+}
+
+gint execute_command_line(const gchar *cmdline, gboolean async)
+{
+	gchar **argv;
+	gint ret;
+
+	debug_print("executing: %s\n", cmdline);
+
+	argv = strsplit_with_quote(cmdline, " ", 0);
+
+	if (async)
+		ret = execute_async(argv);
+	else
+		ret = execute_sync(argv);
+
+	g_strfreev(argv);
+
+	return ret;
+}
+
+gchar *get_command_output(const gchar *cmdline)
+{
+	gchar buf[BUFFSIZE];
+	FILE *fp;
+	GString *str;
+	gchar *ret;
+
+	g_return_val_if_fail(cmdline != NULL, NULL);
+
+	if ((fp = popen(cmdline, "r")) == NULL) {
+		FILE_OP_ERROR(cmdline, "popen");
+		return NULL;
+	}
+
+	str = g_string_new("");
+
+	while (fgets(buf, sizeof(buf), fp) != NULL)
+		g_string_append(str, buf);
+
+	pclose(fp);
+
+	ret = str->str;
+	g_string_free(str, FALSE);
+
+	return ret;
+}
+
+gint open_uri(const gchar *uri, const gchar *cmdline)
+{
+	gchar buf[BUFFSIZE];
+	gchar *p;
+
+	g_return_val_if_fail(uri != NULL, -1);
+
+	if (cmdline &&
+	    (p = strchr(cmdline, '%')) && *(p + 1) == 's' &&
+	    !strchr(p + 2, '%'))
+		g_snprintf(buf, sizeof(buf), cmdline, uri);
+	else {
+		if (cmdline)
+			g_warning("Open URI command line is invalid "
+				  "(there must be only one '%%s'): %s",
+				  cmdline);
+		g_snprintf(buf, sizeof(buf), DEFAULT_BROWSER_CMD, uri);
+	}
+
+	execute_command_line(buf, TRUE);
+
+	return 0;
+}
+
+time_t remote_tzoffset_sec(const gchar *zone)
+{
+	static gchar ustzstr[] = "PSTPDTMSTMDTCSTCDTESTEDT";
+	gchar zone3[4];
+	gchar *p;
+	gchar c;
+	gint iustz;
+	gint offset;
+	time_t remoteoffset;
+
+	strncpy(zone3, zone, 3);
+	zone3[3] = '\0';
+	remoteoffset = 0;
+
+	if (sscanf(zone, "%c%d", &c, &offset) == 2 &&
+	    (c == '+' || c == '-')) {
+		remoteoffset = ((offset / 100) * 60 + (offset % 100)) * 60;
+		if (c == '-')
+			remoteoffset = -remoteoffset;
+	} else if (!strncmp(zone, "UT" , 2) ||
+		   !strncmp(zone, "GMT", 2)) {
+		remoteoffset = 0;
+	} else if (strlen(zone3) == 3) {
+		for (p = ustzstr; *p != '\0'; p += 3) {
+			if (!strncasecmp(p, zone3, 3)) {
+				iustz = ((gint)(p - ustzstr) / 3 + 1) / 2 - 8;
+				remoteoffset = iustz * 3600;
+				break;
+			}
+		}
+		if (*p == '\0')
+			return -1;
+	} else if (strlen(zone3) == 1) {
+		switch (zone[0]) {
+		case 'Z': remoteoffset =   0; break;
+		case 'A': remoteoffset =  -1; break;
+		case 'B': remoteoffset =  -2; break;
+		case 'C': remoteoffset =  -3; break;
+		case 'D': remoteoffset =  -4; break;
+		case 'E': remoteoffset =  -5; break;
+		case 'F': remoteoffset =  -6; break;
+		case 'G': remoteoffset =  -7; break;
+		case 'H': remoteoffset =  -8; break;
+		case 'I': remoteoffset =  -9; break;
+		case 'K': remoteoffset = -10; break; /* J is not used */
+		case 'L': remoteoffset = -11; break;
+		case 'M': remoteoffset = -12; break;
+		case 'N': remoteoffset =   1; break;
+		case 'O': remoteoffset =   2; break;
+		case 'P': remoteoffset =   3; break;
+		case 'Q': remoteoffset =   4; break;
+		case 'R': remoteoffset =   5; break;
+		case 'S': remoteoffset =   6; break;
+		case 'T': remoteoffset =   7; break;
+		case 'U': remoteoffset =   8; break;
+		case 'V': remoteoffset =   9; break;
+		case 'W': remoteoffset =  10; break;
+		case 'X': remoteoffset =  11; break;
+		case 'Y': remoteoffset =  12; break;
+		default:  remoteoffset =   0; break;
+		}
+		remoteoffset = remoteoffset * 3600;
+	} else
+		return -1;
+
+	return remoteoffset;
+}
+
+time_t tzoffset_sec(time_t *now)
+{
+	struct tm gmt, *lt;
+	gint off;
+
+	gmt = *gmtime(now);
+	lt = localtime(now);
+
+	off = (lt->tm_hour - gmt.tm_hour) * 60 + lt->tm_min - gmt.tm_min;
+
+	if (lt->tm_year < gmt.tm_year)
+		off -= 24 * 60;
+	else if (lt->tm_year > gmt.tm_year)
+		off += 24 * 60;
+	else if (lt->tm_yday < gmt.tm_yday)
+		off -= 24 * 60;
+	else if (lt->tm_yday > gmt.tm_yday)
+		off += 24 * 60;
+
+	if (off >= 24 * 60)		/* should be impossible */
+		off = 23 * 60 + 59;	/* if not, insert silly value */
+	if (off <= -24 * 60)
+		off = -(23 * 60 + 59);
+
+	return off * 60;
+}
+
+/* calculate timezone offset */
+gchar *tzoffset(time_t *now)
+{
+	static gchar offset_string[6];
+	struct tm gmt, *lt;
+	gint off;
+	gchar sign = '+';
+
+	gmt = *gmtime(now);
+	lt = localtime(now);
+
+	off = (lt->tm_hour - gmt.tm_hour) * 60 + lt->tm_min - gmt.tm_min;
+
+	if (lt->tm_year < gmt.tm_year)
+		off -= 24 * 60;
+	else if (lt->tm_year > gmt.tm_year)
+		off += 24 * 60;
+	else if (lt->tm_yday < gmt.tm_yday)
+		off -= 24 * 60;
+	else if (lt->tm_yday > gmt.tm_yday)
+		off += 24 * 60;
+
+	if (off < 0) {
+		sign = '-';
+		off = -off;
+	}
+
+	if (off >= 24 * 60)		/* should be impossible */
+		off = 23 * 60 + 59;	/* if not, insert silly value */
+
+	sprintf(offset_string, "%c%02d%02d", sign, off / 60, off % 60);
+
+	return offset_string;
+}
+
+void get_rfc822_date(gchar *buf, gint len)
+{
+	struct tm *lt;
+	time_t t;
+	gchar day[4], mon[4];
+	gint dd, hh, mm, ss, yyyy;
+
+	t = time(NULL);
+	lt = localtime(&t);
+
+	sscanf(asctime(lt), "%3s %3s %d %d:%d:%d %d\n",
+	       day, mon, &dd, &hh, &mm, &ss, &yyyy);
+	g_snprintf(buf, len, "%s, %d %s %d %02d:%02d:%02d %s",
+		   day, dd, mon, yyyy, hh, mm, ss, tzoffset(&t));
+}
+
+static FILE *log_fp = NULL;
+
+void set_log_file(const gchar *filename)
+{
+	if (log_fp) return;
+	log_fp = fopen(filename, "wb");
+	if (!log_fp)
+		FILE_OP_ERROR(filename, "fopen");
+}
+
+void close_log_file(void)
+{
+	if (log_fp) {
+		fclose(log_fp);
+		log_fp = NULL;
+	}
+}
+
+static guint log_verbosity_count = 0;
+
+void log_verbosity_set(gboolean verbose)
+{
+	if (verbose)
+		log_verbosity_count++;
+	else if (log_verbosity_count > 0)
+		log_verbosity_count--;
+}
+
+void debug_print(const gchar *format, ...)
+{
+	va_list args;
+	gchar buf[BUFFSIZE];
+
+	if (!debug_mode) return;
+
+	va_start(args, format);
+	g_vsnprintf(buf, sizeof(buf), format, args);
+	va_end(args);
+
+	fputs(buf, stdout);
+}
+
+#define TIME_LEN	11
+
+void log_print(const gchar *format, ...)
+{
+	va_list args;
+	gchar buf[BUFFSIZE + TIME_LEN];
+	time_t t;
+
+	time(&t);
+	strftime(buf, TIME_LEN + 1, "[%H:%M:%S] ", localtime(&t));
+
+	va_start(args, format);
+	g_vsnprintf(buf + TIME_LEN, BUFFSIZE, format, args);
+	va_end(args);
+
+	if (debug_mode) fputs(buf, stdout);
+	log_window_append(buf, LOG_NORMAL);
+	if (log_fp) {
+		fputs(buf, log_fp);
+		fflush(log_fp);
+	}
+	if (log_verbosity_count)
+		statusbar_puts_all(buf + TIME_LEN);
+}
+
+void log_message(const gchar *format, ...)
+{
+	va_list args;
+	gchar buf[BUFFSIZE + TIME_LEN];
+	time_t t;
+
+	time(&t);
+	strftime(buf, TIME_LEN + 1, "[%H:%M:%S] ", localtime(&t));
+
+	va_start(args, format);
+	g_vsnprintf(buf + TIME_LEN, BUFFSIZE, format, args);
+	va_end(args);
+
+	if (debug_mode) g_message("%s", buf + TIME_LEN);
+	log_window_append(buf + TIME_LEN, LOG_MSG);
+	if (log_fp) {
+		fwrite(buf, TIME_LEN, 1, log_fp);
+		fputs("* message: ", log_fp);
+		fputs(buf + TIME_LEN, log_fp);
+		fflush(log_fp);
+	}
+	statusbar_puts_all(buf + TIME_LEN);
+}
+
+void log_warning(const gchar *format, ...)
+{
+	va_list args;
+	gchar buf[BUFFSIZE + TIME_LEN];
+	time_t t;
+
+	time(&t);
+	strftime(buf, TIME_LEN + 1, "[%H:%M:%S] ", localtime(&t));
+
+	va_start(args, format);
+	g_vsnprintf(buf + TIME_LEN, BUFFSIZE, format, args);
+	va_end(args);
+
+	g_warning("%s", buf);
+	log_window_append(buf + TIME_LEN, LOG_WARN);
+	if (log_fp) {
+		fwrite(buf, TIME_LEN, 1, log_fp);
+		fputs("** warning: ", log_fp);
+		fputs(buf + TIME_LEN, log_fp);
+		fflush(log_fp);
+	}
+}
+
+void log_error(const gchar *format, ...)
+{
+	va_list args;
+	gchar buf[BUFFSIZE + TIME_LEN];
+	time_t t;
+
+	time(&t);
+	strftime(buf, TIME_LEN + 1, "[%H:%M:%S] ", localtime(&t));
+
+	va_start(args, format);
+	g_vsnprintf(buf + TIME_LEN, BUFFSIZE, format, args);
+	va_end(args);
+
+	g_warning("%s", buf);
+	log_window_append(buf + TIME_LEN, LOG_ERROR);
+	if (log_fp) {
+		fwrite(buf, TIME_LEN, 1, log_fp);
+		fputs("*** error: ", log_fp);
+		fputs(buf + TIME_LEN, log_fp);
+		fflush(log_fp);
+	}
+}