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https://github.com/fluencelabs/musl
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ad47d45e9d
the main practical results of this change are 1. the regex code is no longer subject to LGPL; it's now 2-clause BSD 2. most (all?) popular nonstandard regex extensions are supported I hesitate to call this a "sync" since both the old and new code are heavily modified. in one sense, the old code was "more severely" modified, in that it was actively hostile to non-strictly-conforming expressions. on the other hand, the new code has eliminated the useless translation of the entire regex string to wchar_t prior to compiling, and now only converts multibyte character literals as needed. in the future i may use this modified TRE as a basis for writing the long-planned new regex engine that will avoid multibyte-to-wide character conversion entirely by compiling multibyte bracket expressions specific to UTF-8.
36 lines
880 B
C
36 lines
880 B
C
#include <string.h>
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#include <regex.h>
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#include <stdio.h>
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/* Error message strings for error codes listed in `regex.h'. This list
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needs to be in sync with the codes listed there, naturally. */
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/* Converted to single string by Rich Felker to remove the need for
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* data relocations at runtime, 27 Feb 2006. */
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static const char messages[] = {
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"No error\0"
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"No match\0"
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"Invalid regexp\0"
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"Unknown collating element\0"
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"Unknown character class name\0"
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"Trailing backslash\0"
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"Invalid back reference\0"
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"Missing ']'\0"
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"Missing ')'\0"
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"Missing '}'\0"
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"Invalid contents of {}\0"
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"Invalid character range\0"
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"Out of memory\0"
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"XXX\0"
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"\0Unknown error"
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};
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size_t regerror(int e, const regex_t *preg, char *buf, size_t size)
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{
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const char *s;
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for (s=messages; e && *s; e--, e+=strlen(s)+1);
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if (!*s) s++;
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return 1+snprintf(buf, size, "%s", s);
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}
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