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authorGravatar Nikias Bassen2013-12-13 04:35:44 +0100
committerGravatar Nikias Bassen2013-12-13 04:35:44 +0100
commitc168c3c7746e51fef4ec748a3982553833bb0c4e (patch)
tree927567acde881f84bdd3b40caf7dd095952423ad /src/utils.c
parent3537f78a98111b88aab5e2d94dda340cf09be5af (diff)
downloadusbmuxd-c168c3c7746e51fef4ec748a3982553833bb0c4e.tar.gz
usbmuxd-c168c3c7746e51fef4ec748a3982553833bb0c4e.tar.bz2
add support for reading and writing config and pair record files
Diffstat (limited to 'src/utils.c')
-rw-r--r--src/utils.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c
index ceef535..475a921 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -3,6 +3,7 @@
Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
+Copyright (c) 2013 Federico Mena Quintero
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
@@ -27,6 +28,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
+#include <stdarg.h>
+
#include "utils.h"
#include "log.h"
@@ -118,3 +121,144 @@ int collection_count(struct collection *col)
}
return cnt;
}
+
+#ifndef HAVE_STPCPY
+/**
+ * Copy characters from one string into another
+ *
+ * @note: The strings should not overlap, as the behavior is undefined.
+ *
+ * @s1: The source string.
+ * @s2: The destination string.
+ *
+ * @return a pointer to the terminating `\0' character of @s1,
+ * or NULL if @s1 or @s2 is NULL.
+ */
+char *stpcpy(char * s1, const char * s2)
+{
+ if (s1 == NULL || s2 == NULL)
+ return NULL;
+
+ strcpy(s1, s2);
+
+ return s1 + strlen(s2);
+}
+#endif
+
+/**
+ * Concatenate strings into a newly allocated string
+ *
+ * @note: Specify NULL for the last string in the varargs list
+ *
+ * @str: The first string in the list
+ * @...: Subsequent strings. Use NULL for the last item.
+ *
+ * @return a newly allocated string, or NULL if @str is NULL. This will also
+ * return NULL and set errno to ENOMEM if memory is exhausted.
+ */
+char *string_concat(const char *str, ...)
+{
+ size_t len;
+ va_list args;
+ char *s;
+ char *result;
+ char *dest;
+
+ if (!str)
+ return NULL;
+
+ /* Compute final length */
+
+ len = strlen(str) + 1; /* plus 1 for the null terminator */
+
+ va_start(args, str);
+ s = va_arg(args, char *);
+ while (s) {
+ len += strlen(s);
+ s = va_arg(args, char*);
+ }
+ va_end(args);
+
+ /* Concat each string */
+
+ result = malloc(len);
+ if (!result)
+ return NULL; /* errno remains set */
+
+ dest = result;
+
+ dest = stpcpy(dest, str);
+
+ va_start(args, str);
+ s = va_arg(args, char *);
+ while (s) {
+ dest = stpcpy(dest, s);
+ s = va_arg(args, char *);
+ }
+ va_end(args);
+
+ return result;
+}
+
+void buffer_read_from_filename(const char *filename, char **buffer, uint64_t *length)
+{
+ FILE *f;
+ uint64_t size;
+
+ *length = 0;
+
+ f = fopen(filename, "rb");
+ if (!f) {
+ return;
+ }
+
+ fseek(f, 0, SEEK_END);
+ size = ftell(f);
+ rewind(f);
+
+ if (size == 0) {
+ fclose(f);
+ return;
+ }
+
+ *buffer = (char*)malloc(sizeof(char)*(size+1));
+ if (fread(*buffer, sizeof(char), size, f) != size) {
+ usbmuxd_log(LL_ERROR, "%s: ERROR: couldn't read %d bytes from %s\n", __func__, (int)size, filename);
+ }
+ fclose(f);
+
+ *length = size;
+}
+
+void buffer_write_to_filename(const char *filename, const char *buffer, uint64_t length)
+{
+ FILE *f;
+
+ f = fopen(filename, "wb");
+ if (f) {
+ fwrite(buffer, sizeof(char), length, f);
+ fclose(f);
+ }
+}
+
+int plist_write_to_filename(plist_t plist, const char *filename, enum plist_format_t format)
+{
+ char *buffer = NULL;
+ uint32_t length;
+
+ if (!plist || !filename)
+ return 0;
+
+ if (format == PLIST_FORMAT_XML)
+ plist_to_xml(plist, &buffer, &length);
+ else if (format == PLIST_FORMAT_BINARY)
+ plist_to_bin(plist, &buffer, &length);
+ else
+ return 0;
+
+ buffer_write_to_filename(filename, buffer, length);
+
+ free(buffer);
+
+ return 1;
+}