REGCMP(1)REGCMP(1)NAMEregcmp - regular expression compile
SYNOPSISregcmp [ - ] files
DESCRIPTION
The regcmp command performs a function similar to regcmp(3X) and, in most
cases, precludes the need for calling regcmp(3X) from C programs. This
saves on both execution time and program size. The command regcmp
compiles the regular expressions in file and places the output in file.i.
If the - option is used, the output will be placed in file.c. The format
of entries in file is a name (C variable) followed by one or more blanks
followed by a regular expression enclosed in double quotes. The output
of regcmp is C source code. Compiled regular expressions are represented
as extern char vectors. File.i files may thus be included in C programs,
or file.c files may be compiled and later loaded. In the C program which
uses the regcmp output, regex(abc,line) will apply the regular expression
named abc to line. Diagnostics are self-explanatory.
EXAMPLES
name "([A-Za-z][A-Za-z0-9_]*)$0"
telno "\({0,1}([2-9][01][1-9])$0\){0,1} *"
"([2-9][0-9]{2})$1[ -]{0,1}"
"([0-9]{4})$2"
In the C program that uses the regcmp output,
regex(telno, line, area, exch, rest)
will apply the regular expression named telno to line.
SEE ALSOregcmp(3G).
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