188 lines
5.3 KiB
Groff
188 lines
5.3 KiB
Groff
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.\" Copyright (c) 1993, 1994 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining a
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.\" copy of this software and associated documentation files (the "Software"),
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.\" to deal in the Software without restriction, including without limitation
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.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.\" and/or sell copies of the Software, and to permit persons to whom the
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.\" Software furnished to do so, subject to the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included in
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.\" all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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.\" THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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.\" WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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.\" OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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.\" SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall not
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.\" be used in advertising or otherwise to promote the sale, use or other
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.\" dealing in this Software without prior written authorization from the
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.\" X Consortium.
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.\"
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.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtFind-File wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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..
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.de De
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.ce 0
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.if \\n(BD .DF
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.nr BD 0
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.in \\n(OIu
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.if \\n(TM .ls 2
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.sp \\n(DDu
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.fi
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..
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.de FD
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.LP
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.KS
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.TA .5i 3i
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.ta .5i 3i
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.nf
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..
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.de FN
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.fi
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.KE
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.LP
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..
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.de IN \" send an index entry to the stderr
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..
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.de C{
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.KS
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.nf
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.D
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.\"
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.\" choose appropriate monospace font
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.\" the imagen conditional, 480,
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.\" may be changed to L if LB is too
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.\" heavy for your eyes...
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.\"
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.ie "\\*(.T"480" .ft L
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.el .ie "\\*(.T"300" .ft L
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.el .ie "\\*(.T"202" .ft PO
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.el .ie "\\*(.T"aps" .ft CW
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.el .ft R
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.ps \\n(PS
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.ie \\n(VS>40 .vs \\n(VSu
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.el .vs \\n(VSp
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..
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.de C}
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.DE
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.R
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..
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.de Pn
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.ie t \\$1\fB\^\\$2\^\fR\\$3
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.el \\$1\fI\^\\$2\^\fP\\$3
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..
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.de ZN
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.ie t \fB\^\\$1\^\fR\\$2
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.el \fI\^\\$1\^\fP\\$2
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..
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.de NT
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.ne 7
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.ds NO Note
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.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
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.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
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.ie n .sp
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.el .sp 10p
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.TB
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.if '\\$2'C' .ce 99
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.ll -5n
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.R
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..
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. \" Note End -- doug kraft 3/85
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.de NE
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.ce 0
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.in -5n
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.ll +5n
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.ie n .sp
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.el .sp 10p
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..
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.ny0
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.TH XtFindFile __libmansuffix__ __xorgversion__ "XT FUNCTIONS"
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.SH NAME
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XtFindFile \- search for a file using substitutions in the path list
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.SH SYNTAX
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.HP
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String XtFindFile(String \fIpath\fP, Substitution \fIsubstitutions\fP,
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Cardinal \fInum_substitutions\fP, XtFilePredicate \fIpredicate\fP);
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.SH ARGUMENTS
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.IP \fIpath\fP 1i
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Specifies a path of file names, including substitution characters.
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.IP \fIsubstitutions\fP 1i
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Specifies a list of substitutions to make into a path.
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.IP \fInum_substitutions\fP 1i
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Specifies the number of substitutions passed in.
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.IP \fIpredicate\fP 1i
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Specifies a procedure to call to judge a potential file name, or NULL.
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.SH DESCRIPTION
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The \fIpath\fP parameter specifies a string that consists of a series of
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potential file names delimited by colons. Within each name, the
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percent character specifies a string substitution selected by the
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following character. The character sequence ``%:'' specifies an
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embedded colon that is not a delimiter; the sequence is replaced by a
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single colon. The character sequence ``%%'' specifies a percent
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character that does not introduce a substitution; the sequence is
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replaced by a single percent character. If a percent character is
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followed by any other character,
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.ZN XtFindFile
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looks through the
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specified \fIsubstitutions\fP for that character in the \fImatch\fP field and if
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found replaces the percent and match characters with the string in the
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corresponding \fIsubstitution\fP field. A \fIsubstitution\fP field entry of NULL
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is equivalent to a pointer to an empty string. If the operating
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system does not interpret multiple embedded name separators in the
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path (i.e., ``/'' in POSIX) the same way as a single separator,
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.ZN XtFindFile
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will collapse multiple separators into a single one after performing
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all string substitutions. Except for collapsing embedded separators,
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the contents of the string substitutions are not interpreted by
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.ZN XtFindFile
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and may therefore contain any operating-system-dependent
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characters, including additional name separators. Each resulting
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string is passed to the predicate procedure until a string is found for
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which the procedure returns
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.ZN True ;
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this string is the return value for
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.ZN XtFindFile .
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If no string yields a
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.ZN True
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return from the predicate,
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.ZN XtFindFile
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returns NULL.
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.LP
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If the \fIpredicate\fP parameter is NULL, an internal procedure that checks
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if the file exists, is readable, and is not a directory will be used.
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.LP
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It is the responsibility of the caller to free the returned string using
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.ZN XtFree
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when it is no longer needed.
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.SH "SEE ALSO"
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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