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50 lines
1 KiB
C
50 lines
1 KiB
C
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/* stringlib: find/index implementation */
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#ifndef STRINGLIB_FIND_H
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#define STRINGLIB_FIND_H
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#ifndef STRINGLIB_FASTSEARCH_H
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#error must include "stringlib/fastsearch.h" before including this module
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#endif
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Py_LOCAL(Py_ssize_t)
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stringlib_find(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
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const STRINGLIB_CHAR* sub, Py_ssize_t sub_len)
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{
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if (sub_len == 0)
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return 0;
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return fastsearch(str, str_len, sub, sub_len, FAST_SEARCH);
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}
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Py_LOCAL(Py_ssize_t)
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stringlib_rfind(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
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const STRINGLIB_CHAR* sub, Py_ssize_t sub_len)
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{
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Py_ssize_t pos;
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/* XXX - create reversefastsearch helper! */
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if (sub_len == 0)
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pos = str_len;
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else {
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Py_ssize_t j;
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pos = -1;
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for (j = str_len - sub_len; j >= 0; --j)
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if (STRINGLIB_CMP(str+j, sub, sub_len) == 0) {
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pos = j;
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break;
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}
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}
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return pos;
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}
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#endif
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/*
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Local variables:
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c-basic-offset: 4
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indent-tabs-mode: nil
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End:
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*/
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