From 90f6e953d2d2f905675aadbaf5e307e24c586edd Mon Sep 17 00:00:00 2001
From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Tue, 16 Dec 2008 20:29:35 +0100
Subject: [PATCH] Added some string utility functions.

---
 lib/utils.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/utils.h | 17 +++++++++++++++--
 2 files changed, 72 insertions(+), 2 deletions(-)

diff --git a/lib/utils.c b/lib/utils.c
index 8b64b76..863fe4f 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -17,6 +17,7 @@
 */
 
 #include <stdlib.h>
+#include <stdio.h>
 
 #ifdef HAVE_CONFIG_H
 #include <config.h>
@@ -41,3 +42,59 @@ void _sizebuf(struct buffer *buf, size_t wanted, size_t el)
     buf->s = n;
 }
 
+char *decstr(char **p, size_t *len)
+{
+    char *p2, *ret;
+    
+    for(p2 = *p; (p2 - *p) < *len; p2++) {
+	if(*p2 == 0)
+	    break;
+    }
+    if((p2 - *p) == *len)
+	return(NULL);
+    p2++;
+    ret = *p;
+    *len -= p2 - *p;
+    *p = p2;
+    return(ret);
+}
+
+char *vsprintf2(char *format, va_list al)
+{
+    int ret;
+    char *buf;
+    va_list al2;
+    
+    va_copy(al2, al);
+    ret = vsnprintf(NULL, 0, format, al2);
+    va_end(al2);
+    buf = smalloc(ret + 1);
+    va_copy(al2, al);
+    vsnprintf(buf, ret + 1, format, al2);
+    va_end(al2);
+    return(buf);
+}
+
+char *sprintf2(char *format, ...)
+{
+    va_list args;
+    char *buf;
+    
+    va_start(args, format);
+    buf = vsprintf2(format, args);
+    va_end(args);
+    return(buf);
+}
+
+char *sprintf3(char *format, ...)
+{
+    static char *buf = NULL;
+    va_list args;
+    
+    if(buf != NULL)
+	free(buf);
+    va_start(args, format);
+    buf = vsprintf2(format, args);
+    va_end(args);
+    return(buf);
+}
diff --git a/lib/utils.h b/lib/utils.h
index d74d09d..3c9800c 100644
--- a/lib/utils.h
+++ b/lib/utils.h
@@ -1,10 +1,12 @@
 #ifndef _UTILS_H
 #define _UTILS_H
 
+#include <stdarg.h>
+
 #define smalloc(size) ({void *__result__; ((__result__ = malloc(size)) == NULL)?({exit(-1); (void *)0;}):__result__;})
 #define srealloc(ptr, size) ({void *__result__; ((__result__ = realloc((ptr), (size))) == NULL)?({exit(-1); (void *)0;}):__result__;})
 #define szmalloc(size) memset(smalloc(size), 0, size)
-#define sstrdup(str) ({char *__strbuf__ = (str); strcpy(smalloc(strlen(__strbuf__) + 1), __strbuf__);})
+#define sstrdup(str) ({const char *__strbuf__ = (str); strcpy(smalloc(strlen(__strbuf__) + 1), __strbuf__);})
 #define omalloc(o) ((o) = szmalloc(sizeof(*(o))))
 
 #define bufinit(buf) memset(&(buf), 0, sizeof(buf))
@@ -23,12 +25,19 @@ do { \
     memcpy((buf).b + (buf).d, (new), (__bufcat_size__) * sizeof(*((buf).b))); \
     (buf).d += __bufcat_size__; \
 } while(0)
-#define bufcatstr2(buf, str) \
+#define bufcatstr(buf, str) \
 do { \
     char *__buf__; \
     __buf__ = (str); \
     bufcat((buf), __buf__, strlen(__buf__)); \
 } while(0)
+#define bufcatstr2(buf, str) \
+do { \
+    char *__buf__; \
+    __buf__ = (str); \
+    bufcat((buf), __buf__, strlen(__buf__) + 1); \
+} while(0)
+#define bufeat(buf, len) memmove((buf).b, (buf).b + (len), (buf).d -= (len))
 
 struct buffer {
     void *b;
@@ -48,5 +57,9 @@ struct charvbuf {
 };
 
 void _sizebuf(struct buffer *buf, size_t wanted, size_t el);
+char *decstr(char **p, size_t *len);
+char *vsprintf2(char *format, va_list al);
+char *sprintf2(char *format, ...);
+char *sprintf3(char *format, ...);
 
 #endif
-- 
2.11.0