118 lines
2.0 KiB
C
118 lines
2.0 KiB
C
/*-*- Mode: C; c-basic-offset: 8 -*-*/
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#include <assert.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include "util.h"
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#include "strv.h"
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char *strv_find(char **l, const char *name) {
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assert(l);
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assert(name);
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for (; *l; l++)
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if (streq(*l, name))
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return *l;
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return NULL;
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}
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void strv_free(char **l) {
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char **k;
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if (!l)
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return;
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for (k = l; *k; k++)
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free(*k);
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free(l);
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}
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char **strv_copy(char **l) {
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char **r, **k;
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if (!(r = new(char*, strv_length(l)+1)))
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return NULL;
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for (k = r; *l; k++, l++)
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if (!(*k = strdup(*l)))
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goto fail;
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*k = NULL;
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return r;
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fail:
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for (k--, l--; k >= r; k--, l--)
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free(*k);
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return NULL;
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}
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unsigned strv_length(char **l) {
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unsigned n = 0;
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if (!l)
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return 0;
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for (; *l; l++)
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n++;
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return n;
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}
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char **strv_new(const char *x, ...) {
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const char *s;
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char **a;
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unsigned n = 0, i = 0;
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va_list ap;
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if (x) {
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n = 1;
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va_start(ap, x);
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while (va_arg(ap, const char*))
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n++;
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va_end(ap);
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}
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if (!(a = new(char*, n+1)))
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return NULL;
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if (x) {
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if (!(a[i] = strdup(x))) {
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free(a);
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return NULL;
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}
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i++;
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va_start(ap, x);
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while ((s = va_arg(ap, const char*))) {
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if (!(a[i] = strdup(s)))
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goto fail;
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i++;
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}
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va_end(ap);
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}
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a[i] = NULL;
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return a;
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fail:
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for (; i > 0; i--)
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if (a[i-1])
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free(a[i-1]);
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free(a);
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return NULL;
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}
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