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-rw-r--r--src/lib/string.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/lib/string.c b/src/lib/string.c
index 2e71489ff6..a19f017852 100644
--- a/src/lib/string.c
+++ b/src/lib/string.c
@@ -1,9 +1,14 @@
+#include <assert.h>
+#include <rules.h>
#include <string.h>
#include <stddef.h>
#include <stdlib.h>
char *strdup(const char *s)
{
+ if (!ENV_RAMSTAGE)
+ dead_code(); /* This can't be used without malloc(). */
+
size_t sz = strlen(s) + 1;
char *d = malloc(sz);
if (d)
@@ -13,6 +18,9 @@ char *strdup(const char *s)
char *strconcat(const char *s1, const char *s2)
{
+ if (!ENV_RAMSTAGE)
+ dead_code(); /* This can't be used without malloc(). */
+
size_t sz_1 = strlen(s1);
size_t sz_2 = strlen(s2);
char *d = malloc(sz_1 + sz_2 + 1);
@@ -22,3 +30,104 @@ char *strconcat(const char *s1, const char *s2)
}
return d;
}
+
+size_t strnlen(const char *src, size_t max)
+{
+ size_t i = 0;
+ while ((*src++) && (i < max))
+ i++;
+ return i;
+}
+
+size_t strlen(const char *src)
+{
+ size_t i = 0;
+ while (*src++)
+ i++;
+ return i;
+}
+
+char *strchr(const char *s, int c)
+{
+ do {
+ if (*s == c)
+ return (char *)s;
+ } while (*s++);
+
+ return NULL;
+}
+
+char *strrchr(const char *s, int c)
+{
+ char *p = NULL;
+
+ do {
+ if (*s == c)
+ p = (char *)s;
+ } while (*s++);
+
+ return p;
+}
+
+char *strncpy(char *to, const char *from, int count)
+{
+ char *ret = to;
+ char data;
+
+ while (count > 0) {
+ count--;
+ data = *from++;
+ *to++ = data;
+ if (data == '\0')
+ break;
+ }
+
+ while (count > 0) {
+ count--;
+ *to++ = '\0';
+ }
+ return ret;
+}
+
+char *strcpy(char *dst, const char *src)
+{
+ char *ptr = dst;
+
+ while (*src)
+ *dst++ = *src++;
+ *dst = '\0';
+
+ return ptr;
+}
+
+int strcmp(const char *s1, const char *s2)
+{
+ int r;
+
+ while ((r = (*s1 - *s2)) == 0 && *s1) {
+ s1++;
+ s2++;
+ }
+ return r;
+}
+
+int strncmp(const char *s1, const char *s2, int maxlen)
+{
+ int i;
+
+ for (i = 0; i < maxlen; i++) {
+ if ((s1[i] != s2[i]) || (s1[i] == '\0'))
+ return s1[i] - s2[i];
+ }
+
+ return 0;
+}
+
+unsigned int skip_atoi(char **s)
+{
+ unsigned int i = 0;
+
+ while (isdigit(**s))
+ i = i*10 + *((*s)++) - '0';
+ return i;
+}