+ xbt_log_appender_t res = xbt_new0(s_xbt_log_appender_t, 1);
+ res->do_append = &append_file;
+ res->free_ = &free_;
+ if (arg) {
+ res->data = (void *) fopen(arg, "w");
+ if (res->data == NULL)
+ xbt_die("Cannot open file: %s: %s", arg, strerror(errno));
+ } else {
+ res->data = (void *) stderr;
+ }
+ return res;
+}
+
+struct xbt_log_append2_file_s {
+ FILE* file;
+ char* filename;
+ int count; //negative for roll
+ long int limit;
+};
+typedef struct xbt_log_append2_file_s* xbt_log_append2_file_t;
+
+#define APPEND2_END_TOKEN "\n[End of log]\n"
+#define APPEND2_END_TOKEN_CLEAR "\n "
+
+static void open_append2_file(xbt_log_append2_file_t data){
+ if(data->count<0) {
+ //Roll
+ if (!data->file) {
+ data->file= fopen(data->filename, "w");
+ if (data->file == NULL)
+ xbt_die("Cannot open file: %s: %s", data->filename, strerror(errno));
+ } else {
+ fputs(APPEND2_END_TOKEN_CLEAR,data->file);
+ fseek(data->file,0,SEEK_SET);
+ }
+ } else{
+ //Split
+ if(data->file)
+ fclose(data->file);
+ char newname[512];
+ char* pre=xbt_strdup(data->filename);
+ char* sep=strchr(pre,'%');
+ if(!sep)
+ sep=pre+strlen(pre);
+ char* post=sep+1;
+ *sep='\0';
+ snprintf(newname,511,"%s%i%s",pre,data->count,post);
+ data->count++;
+ data->file= fopen(newname, "w");
+ if (data->file == NULL)
+ xbt_die("Cannot open file: %s: %s", newname, strerror(errno));
+ xbt_free(pre);
+ }