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34 lines
799 B
C
34 lines
799 B
C
#include "fmt.h"
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#include "stralloc.h"
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#include "textcode.h"
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#include "haveinline.h"
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static inline int fromhex(char c) {
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if (c>='0' && c<='9') return c-'0';
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if (c>='A' && c<='F') return c-'A'+10;
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if (c>='a' && c<='f') return c-'a'+10;
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return -1;
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}
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int scan_urlencoded_sa(const char *src, stralloc *sa) {
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register const unsigned char* s=(const unsigned char*) src;
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unsigned long i;
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for (i=0; s[i]; ++i) {
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if (s[i]=='%') {
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char dest;
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int j=fromhex(s[i+1]);
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if (j<0) break;
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dest=j<<4;
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j=fromhex(s[i+2]);
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if (j<0) break;
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dest|=j;
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i+=2;
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if (!stralloc_catb(sa, &dest, 1)) return 0;
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} else if (s[i]=='+') {
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if (!stralloc_catb(sa," ",1)) return 0;
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} else
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if (!stralloc_catb(sa,s+i,1)) return 0;
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}
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return 1;
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}
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