X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c7b463c9c17665403d001fc59cb649551e93d950..4567958b25228037afc35b3116064a42a5b9e322:/src/xbt/xbt_str.c

diff --git a/src/xbt/xbt_str.c b/src/xbt/xbt_str.c
index 746092e008..e4ea1849e6 100644
--- a/src/xbt/xbt_str.c
+++ b/src/xbt/xbt_str.c
@@ -327,11 +327,14 @@ xbt_dynar_t xbt_str_split_str(const char *s, const char *sep)
  *
  * The string passed as argument must be writable (not const)
  * The elements of the dynar are just parts of the string passed as argument.
+ * So if you don't store that argument elsewhere, you should free it in addition
+ * to freeing the dynar. This can be done by simply freeing the first argument
+ * of the dynar:
+ *  free(xbt_dynar_get_ptr(dynar,0));
  *
- * To free the structure constructed by this function, free the first element and free the dynar:
- *
- * free(xbt_dynar_get_ptr(dynar,0));
- * xbt_dynar_free(&dynar);
+ * Actually this function puts a bunch of \0 in the memory area you passed as
+ * argument to separate the elements, and pushes the address of each chunk
+ * in the resulting dynar. Yes, that's uneven. Yes, that's gory. But that's efficient.
  */
 xbt_dynar_t xbt_str_split_quoted_in_place(char *s) {
   xbt_dynar_t res = xbt_dynar_new(sizeof(char *), NULL);
@@ -345,7 +348,7 @@ xbt_dynar_t xbt_str_split_quoted_in_place(char *s) {
 
   beg = s;
 
-  /* do not trim leading spaces: caller responsability to clean his cruft */
+  /* do not trim leading spaces: caller responsibility to clean his cruft */
   end = beg;
 
   while (!done) {
@@ -903,6 +906,28 @@ char *xbt_str_from_file(FILE * file)
   return res;
 }
 
+/* @brief Retrun 1 if string 'str' starts with string 'start'
+ *
+ * \param str a string
+ * \param start the string to search in str
+ *
+ * \return 1 if 'str' starts with 'start'
+ */
+int xbt_str_start_with(const char* str, const char* start)
+{
+  int i;
+  size_t l_str = strlen(str);
+  size_t l_start = strlen(start);
+
+  if(l_start > l_str) return 0;
+
+  for(i = 0; i< l_start; i++){
+    if(str[i] != start[i]) return 0;
+  }
+
+  return 1;
+}
+
 #ifdef SIMGRID_TEST
 #include "xbt/str.h"