Move load_entire_file() to utils

1 files changed, 39 insertions, 0 deletions

diff --git a/libcrystfel/src/utils.c b/libcrystfel/src/utils.c
index 4873b050..de1dc2f4 100644
--- a/libcrystfel/src/utils.c
+++ b/libcrystfel/src/utils.c
@@ -674,3 +674,42 @@ struct rvec quat_rot(struct rvec q, struct quaternion z)
 
 	return res;
 }
+
+
+char *load_entire_file(const char *filename)
+{
+	struct stat statbuf;
+	int r;
+	char *contents;
+	FILE *fh;
+
+	r = stat(filename, &statbuf);
+	if ( r != 0 ) {
+		ERROR("File '%s' not found\n", filename);
+		return NULL;
+	}
+
+	contents = malloc(statbuf.st_size+1);
+	if ( contents == NULL ) {
+		ERROR("Failed to allocate memory for file\n");
+		return NULL;
+	}
+
+	fh = fopen(filename, "r");
+	if ( fh == NULL ) {
+		ERROR("Failed to open file '%s'\n", filename);
+		free(contents);
+		return NULL;
+	}
+
+	if ( fread(contents, 1, statbuf.st_size, fh) != statbuf.st_size ) {
+		ERROR("Failed to read file '%s'\n", filename);
+		free(contents);
+		return NULL;
+	}
+	contents[statbuf.st_size] = '\0';
+
+	fclose(fh);
+
+	return contents;
+}