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32 lines
679 B
C
32 lines
679 B
C
#include <stdarg.h>
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#include <string.h>
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#include "stralloc.h"
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int stralloc_catm_internal(stralloc* sa, ...) {
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va_list a;
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const char* s;
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size_t n=0;
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va_start(a,sa);
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while ((s=va_arg(a,const char*))) {
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size_t tmp = strlen(s);
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if (n + tmp < n) {
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va_end(a);
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return 0; // integer overflow
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// integer overflow should not be possible, but someone could pass
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// the same string twice to provoke it. Better check than sorry.
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}
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n += tmp;
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}
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va_end(a);
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stralloc_readyplus(sa,n);
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va_start(a,sa);
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while ((s=va_arg(a,const char*)))
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if (stralloc_cats(sa,s)==0) {
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va_end(a);
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return 0;
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}
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va_end(a);
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return 1;
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}
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