Open System Services Library Calls Reference Manual (G06.28+, H06.05+)

regcomp(3) OSS Library Calls Reference Manual
} else
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printf("String contained a match for the entire re\n");
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for (count = 0; count <= matches_tocheck; count++) {
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if (pmatch[count].rm_so != -1) {
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printf(
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"Subexpression %i matched in string\n", count);
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printf(
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"Match starts at %i. Byte after match is %i\n",
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pmatch[count].rm_so, pmatch[count].rm_eo);
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} else
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printf(
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"Subexpression %i had NO match\n", count);
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} |
regfree(&preg);
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} |
RETURN VALUES
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Upon successful completion, the regcomp() function returns a value of 0 (zero). Otherwise, it |
returns one the following nonzero values indicating the type of failure. If the regcomp() func- |
tion fails, the contents of the preg parameter is undefined. |
If the regexec() function finds a match, it returns a value of 0 (zero). If it does not find a match |
or fails for another reason, it returns one the following nonzero values indicating the type of |
failure. If the regexec() function does not find a match or fails for another reason, the contents |
of the pmatch parameter is undefined. |
Unless otherwise noted, the following values are returned by the regcomp() function only. |
REG_BADBR ||
The contents within the pair \{ (backslash left brace) and \} (backslash right |
brace) are unusable: Not a number, number too large, more than two numbers, or |
first number larger than second. |
REG_BADPAT ||
There is an unusable basic regular expression or extended regular expression. |
This value is returned by the regexec() function only. |
REG_BADRPT ||
The ?, *,or+ symbols are not preceded by a valid basic regular expression or an |
extended regular expression. |
REG_EBRACE ||
The use of a pair of \{ (backslash left brace) and \} (backslash right brace) or {} |
(braces) is unbalanced. |
REG_EBRACK ||
The use of [] (square brackets) is unbalanced. |
REG_ECOLLATE ||
There is an unusable collating element referenced. |
REG_ECTYPE ||
There is an unusable character class type referenced. |
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