diff options
Diffstat (limited to 'ext/pcre/pcrelib/pcredemo.c')
| -rw-r--r-- | ext/pcre/pcrelib/pcredemo.c | 34 |
1 files changed, 12 insertions, 22 deletions
diff --git a/ext/pcre/pcrelib/pcredemo.c b/ext/pcre/pcrelib/pcredemo.c index d565aecddd..3647568766 100644 --- a/ext/pcre/pcrelib/pcredemo.c +++ b/ext/pcre/pcrelib/pcredemo.c @@ -7,24 +7,14 @@ of calling the PCRE regular expression library from a C program. See the pcresample documentation for a short discussion ("man pcresample" if you have the PCRE man pages installed). -In Unix-like environments, if PCRE is installed in your standard system -libraries, you should be able to compile this program using this command: +In Unix-like environments, compile this program thuswise: -gcc -Wall pcredemo.c -lpcre -o pcredemo - -If PCRE is not installed in a standard place, it is likely to be installed with -support for the pkg-config mechanism. If you have pkg-config, you can compile -this program using this command: - -gcc -Wall pcredemo.c `pkg-config --cflags --libs libpcre` -o pcredemo - -If you do not have pkg-config, you may have to use this: - -gcc -Wall pcredemo.c -I/usr/local/include -L/usr/local/lib \ - -R/usr/local/lib -lpcre -o pcredemo + gcc -Wall pcredemo.c -I/usr/local/include -L/usr/local/lib \ + -R/usr/local/lib -lpcre Replace "/usr/local/include" and "/usr/local/lib" with wherever the include and -library files for PCRE are installed on your system. Only some operating +library files for PCRE are installed on your system. You don't need -I and -L +if PCRE is installed in the standard system libraries. Only some operating systems (e.g. Solaris) use the -R option. Building under Windows: @@ -233,12 +223,12 @@ if (namecount <= 0) printf("No named substrings\n"); else * * * If the previous match WAS for an empty string, we can't do that, as it * * would lead to an infinite loop. Instead, a special call of pcre_exec() * -* is made with the PCRE_NOTEMPTY_ATSTART and PCRE_ANCHORED flags set. * -* The first of these tells PCRE that an empty string at the start of the * -* subject is not a valid match; other possibilities must be tried. The * -* second flag restricts PCRE to one match attempt at the initial string * -* position. If this match succeeds, an alternative to the empty string * -* match has been found, and we can proceed round the loop. * +* is made with the PCRE_NOTEMPTY and PCRE_ANCHORED flags set. The first * +* of these tells PCRE that an empty string is not a valid match; other * +* possibilities must be tried. The second flag restricts PCRE to one * +* match attempt at the initial string position. If this match succeeds, * +* an alternative to the empty string match has been found, and we can * +* proceed round the loop. * *************************************************************************/ if (!find_all) @@ -261,7 +251,7 @@ for (;;) if (ovector[0] == ovector[1]) { if (ovector[0] == subject_length) break; - options = PCRE_NOTEMPTY_ATSTART | PCRE_ANCHORED; + options = PCRE_NOTEMPTY | PCRE_ANCHORED; } /* Run the next matching operation */ |