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authorLennart Poettering <lennart@poettering.net>2013-03-19 20:01:18 +0100
committerLennart Poettering <lennart@poettering.net>2013-03-20 23:00:09 +0100
commit66e35261ef51119189486e9a31e7b97e8e18e255 (patch)
tree39e85a9b321968c5e40cdd2e669c8f4a20fe138f /src/shared/util.c
parenta9c55a882f021318fa728af78f398f4fb7ad7c85 (diff)
util: add hexmem() and strextend() calls
Diffstat (limited to 'src/shared/util.c')
-rw-r--r--src/shared/util.c70
1 files changed, 69 insertions, 1 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index bdef9f0431..f94abbcc02 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -1029,7 +1029,6 @@ int rmdir_parents(const char *path, const char *stop) {
return 0;
}
-
char hexchar(int x) {
static const char table[16] = "0123456789abcdef";
@@ -1050,6 +1049,23 @@ int unhexchar(char c) {
return -1;
}
+char *hexmem(const void *p, size_t l) {
+ char *r, *z;
+ const uint8_t *x;
+
+ z = r = malloc(l * 2 + 1);
+ if (!r)
+ return NULL;
+
+ for (x = p; x < (const uint8_t*) p + l; x++) {
+ *(z++) = hexchar(*x >> 4);
+ *(z++) = hexchar(*x & 15);
+ }
+
+ *z = 0;
+ return r;
+}
+
char octchar(int x) {
return '0' + (x & 7);
}
@@ -5729,3 +5745,55 @@ fail2:
rmdir(template);
return r;
}
+
+char *strextend(char **x, ...) {
+ va_list ap;
+ size_t f, l;
+ char *r, *p;
+
+ assert(x);
+
+ l = f = *x ? strlen(*x) : 0;
+
+ va_start(ap, x);
+ for (;;) {
+ const char *t;
+ size_t n;
+
+ t = va_arg(ap, const char *);
+ if (!t)
+ break;
+
+ n = strlen(t);
+ if (n > ((size_t) -1) - l) {
+ va_end(ap);
+ return NULL;
+ }
+
+ l += n;
+ }
+ va_end(ap);
+
+ r = realloc(*x, l+1);
+ if (!r)
+ return NULL;
+
+ p = r + f;
+
+ va_start(ap, x);
+ for (;;) {
+ const char *t;
+
+ t = va_arg(ap, const char *);
+ if (!t)
+ break;
+
+ p = stpcpy(p, t);
+ }
+ va_end(ap);
+
+ *p = 0;
+ *x = r;
+
+ return r + l;
+}