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84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* shexp.h: Defines and prototypes for shell exp. match routines
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*
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* This routine will match a string with a shell expression. The expressions
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* accepted are based loosely on the expressions accepted by zsh.
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*
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* o * matches anything
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* o ? matches one character
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* o \ will escape a special character
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* o $ matches the end of the string
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* Bracketed expressions:
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* o [abc] matches one occurence of a, b, or c.
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* o [^abc] matches any character except a, b, or c.
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* To be matched between [ and ], these characters must be escaped: \ ]
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* No other characters need be escaped between brackets.
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* Unnecessary escaping is permitted.
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* o [a-z] matches any character between a and z, inclusive.
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* The two range-definition characters must be alphanumeric ASCII.
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* If one is upper case and the other is lower case, then the ASCII
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* non-alphanumeric characters between Z and a will also be in range.
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* o [^a-z] matches any character except those between a and z, inclusive.
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* These forms cannot be combined, e.g [a-gp-z] does not work.
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* o Exclusions:
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* As a top level, outter-most expression only, the expression
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* foo~bar will match the expression foo, provided it does not also
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* match the expression bar. Either expression or both may be a union.
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* Except between brackets, any unescaped ~ is an exclusion.
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* At most one exclusion is permitted.
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* Exclusions cannot be nested (contain other exclusions).
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* example: *~abc will match any string except abc
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* o Unions:
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* (foo|bar) will match either the expression foo, or the expression bar.
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* At least one '|' separator is required. More are permitted.
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* Expressions inside unions may not include unions or exclusions.
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* Inside a union, to be matched and not treated as a special character,
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* these characters must be escaped: \ ( | ) [ ~ except when they occur
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* inside a bracketed expression, where only \ and ] require escaping.
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*
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* The public interface to these routines is documented below.
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*
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*/
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#ifndef SHEXP_H
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#define SHEXP_H
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#include "utilrename.h"
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/*
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* Requires that the macro MALLOC be set to a "safe" malloc that will
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* exit if no memory is available.
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*/
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/* --------------------------- Public routines ---------------------------- */
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/*
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* shexp_valid takes a shell expression exp as input. It returns:
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*
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* NON_SXP if exp is a standard string
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* INVALID_SXP if exp is a shell expression, but invalid
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* VALID_SXP if exp is a valid shell expression
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*/
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#define NON_SXP -1
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#define INVALID_SXP -2
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#define VALID_SXP 1
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SEC_BEGIN_PROTOS
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extern int PORT_RegExpValid(const char *exp);
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extern int PORT_RegExpSearch(const char *str, const char *exp);
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/* same as above but uses case insensitive search */
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extern int PORT_RegExpCaseSearch(const char *str, const char *exp);
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SEC_END_PROTOS
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#endif
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