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731043fd4d
Implement a (slow) unsetenv() for older systems. Signed-off-by: Jason Riedy <ejr@cs.berkeley.edu> Signed-off-by: Junio C Hamano <junkio@cox.net>
26 lines
566 B
C
26 lines
566 B
C
#include <stdlib.h>
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#include <string.h>
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void gitunsetenv (const char *name)
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{
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extern char **environ;
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int src, dst;
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size_t nmln;
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nmln = strlen(name);
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for (src = dst = 0; environ[src]; ++src) {
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size_t enln;
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enln = strlen(environ[src]);
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if (enln > nmln) {
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/* might match, and can test for '=' safely */
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if (0 == strncmp (environ[src], name, nmln)
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&& '=' == environ[src][nmln])
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/* matches, so skip */
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continue;
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}
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environ[dst] = environ[src];
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++dst;
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}
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environ[dst] = NULL;
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}
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