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Execute a regular expression
#include <unix.h>
int re_exec( char *s );
- s
- A pointer to the string that you want to compare to the current
regular expression.
This string must end with a null byte and may include newline characters.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
|
This function is in libc.a, but not in libc.so
(in order to save space). |
The re_exec() function compares the string pointed to by the
string argument with the last regular expression passed to
re_comp().
The re_comp() and re_exec() functions support
simple regular expressions.
The regular expressions of the form \{m\},
\{m,\}, or \{m,n\} aren't supported.
- 1
- The string matches the last compiled regular expression.
- 0
- The string doesn't match the last compiled regular expression.
- -1
- The compiled regular expression is invalid (indicating an internal error).
Legacy Unix
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
re_comp(),
regcomp(),
regerror(),
regexec()
grep
in the Utilities Reference
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