74 lines
2.0 KiB
Groff
74 lines
2.0 KiB
Groff
.\" ----------------------------------------------------------------------------
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.\" "THE BEER-WARE LICENSE" (Revision 42):
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.\" <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
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.\" can do whatever you want with this stuff. If we meet some day, and you think
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.\" this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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.\" ----------------------------------------------------------------------------
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.\"
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.\" $Id: config_open.3,v 1.1 1994/11/13 20:47:44 phk Exp $
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.\"
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.Dd November 13, 1994
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.Dt config_open 3
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.Os FreeBSD
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.Sh NAME
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.Nm config_open ,
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.Nm config_close ,
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.Nm config_next ,
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.Nm config_skip
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.Nd read config files
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.Sh SYNOPSIS
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.Ft char *
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.Fn config_open "const char *filename" "int contlines"
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.Ft void
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.Fn config_close
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.Ft char *
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.Fn config_next
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.Ft char *
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.Fn config_skip "char **string"
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.Sh DESCRIPTION
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These functions are used to read config files with the following syntax:
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.Bl -bullet -compact
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.It
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All lines where the first
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.Sq !isspace()
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is '#' are comments which are discarded.
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.It
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If continuation-lines are enabled, any line starting with a
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.Sq isspace()
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character is joined to the preceding line and blank lines are discarded.
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.It
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An entry starts at the first
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.Sq !isspace()
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character and ends at the first
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.Sq Li \en
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.Li .
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.El
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.Pp
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.Fn config_open
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will open the specified
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.Fa filename
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and read it into a private malloced area, and close the file again. If
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.Fa contlines
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is non-zero, continuation lines will be allowed.
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In case of trouble, the name of the system-call causing the trouble will
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be returned. If successful,
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.Fn config_open
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returns NULL.
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.Pp
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.Fn config_close
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will free the malloced area.
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.Pp
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.Fn config_next
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returns the next entry in the area. NULL is returned to indicate End-of-file.
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The returned string is null-terminated.
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.Pp
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.Fn config_skip
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returns the next word from the string
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.Fa *string
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.Li .
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.Fa *string
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will be advanced to point to the next word.
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NULL is returned to indicate the end of the string.
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.Sh AUTHOR
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Poul-Henning Kamp <phk@login.dknet.dk>
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