mirror of
https://github.com/samba-team/samba.git
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8e16d8a76f
- Use .mk files directly (no need for a SMB_*_MK() macro when adding a new SUBSYSTEM, MODULE or BINARY). This allows addition of new modules and subsystems without running configure - Add support for generating .dot files with the Samba4 dependency tree (as used by the graphviz and springgraph utilities) (This used to be commit 64826da834e26ee0488674e27a0eae36491ee179)
463 lines
11 KiB
Perl
463 lines
11 KiB
Perl
###########################################################
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### SMB Build System ###
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### - config.mk parsing functions ###
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### ###
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### Copyright (C) Stefan (metze) Metzmacher 2004 ###
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### Released under the GNU GPL ###
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###########################################################
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package config_mk;
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use input;
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use strict;
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###########################################################
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# The parsing function which parses the file
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#
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# $result = _parse_config_mk($filename)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $result - the resulting structure
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#
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# $result->{ERROR_CODE} - the error_code, '0' means success
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# $result->{ERROR_STR} - the error string
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#
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# $result->{$key}{KEY} - the key == the variable which was parsed
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# $result->{$key}{VAL} - the value of the variable
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sub _parse_config_mk($)
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{
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my $filename = shift;
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my $result;
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my $linenum = -1;
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my $waiting = 0;
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my $section = "GLOBAL";
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my $key;
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$result->{ERROR_CODE} = -1;
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open(CONFIG_MK, "< $filename") || die ("Can't open $filename\n");
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while (<CONFIG_MK>) {
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my $line = $_;
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my $val;
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$linenum++;
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#
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# lines beginnig with '#' are ignored
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#
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if ($line =~ /^\#.*$/) {
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next;
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}
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#
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#
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#
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if (($waiting == 0) && ($line =~ /^\[([a-zA-Z0-9_:]+)\][\t ]*$/)) {
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$section = $1;
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next;
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}
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#
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# 1.) lines with an alphanumeric character indicate
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# a new variable,
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# 2.) followed by zero or more whitespaces or tabs
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# 3.) then one '=' character
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# 4.) followed by the value of the variable
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# 5.) a newline ('\n') can be escaped by a '\' before the newline
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# and the next line needs to start with a tab ('\t')
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#
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if (($waiting == 0) && ($line =~ /^([a-zA-Z0-9_]+)[\t ]*=(.*)$/)) {
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$key = $1;
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$val = $2;
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#
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# when we have a '\' before the newline
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# then skip it and wait for the next line.
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#
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if ($val =~ /(.*)(\\)$/) {
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$val = $1;
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$waiting = 1;
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} else {
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$waiting = 0;
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}
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$result->{$section}{$key}{KEY} = $key;
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$result->{$section}{$key}{VAL} = $val;
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next;
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}
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#
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# when we are waiting for a value to continue then
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# check if it has a leading tab.
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#
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if (($waiting == 1) && ($line =~ /^\t(.*)$/)) {
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$val = $1;
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#
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# when we have a '\' before the newline
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# then skip it and wait for the next line.
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#
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if ($val =~ /(.*)( \\)$/) {
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$val = $1;
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$waiting = 1;
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} else {
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$waiting = 0;
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}
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$result->{$section}{$key}{VAL} .= " ";
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$result->{$section}{$key}{VAL} .= $val;
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next;
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}
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#
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# catch empty lines they're ignored
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# and we're no longer waiting for the value to continue
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#
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if ($line =~ /^$/) {
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$waiting = 0;
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next;
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}
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close(CONFIG_MK);
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$result->{ERROR_STR} = "Bad line while parsing $filename\n$filename:$linenum: $line";
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return $result;
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}
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close(CONFIG_MK);
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$result->{ERROR_CODE} = 0;
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return $result;
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}
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###########################################################
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# A caching function to avoid to parse
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# a file twice or more
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#
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# $result = _get_parse_results($filename)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $result - the resulting structure
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#
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# $result->{ERROR_CODE} - the error_code, '0' means success
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# $result->{ERROR_STR} - the error string
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#
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# $result->{$key}{KEY} - the key == the variable which was parsed
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# $result->{$key}{VAL} - the value of the variable
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my $_get_parse_results_cache;
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sub _get_parse_results($)
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{
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my $filename = shift;
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if ((!defined($_get_parse_results_cache->{$filename}{ERROR_CODE}))
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||($_get_parse_results_cache->{$filename}{ERROR_CODE} != 0)) {
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$_get_parse_results_cache->{$filename} = _parse_config_mk($filename);
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}
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return $_get_parse_results_cache->{$filename};
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}
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###########################################################
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# The fetching function to fetch the value of a variable
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# out of the file
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#
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# $value = _fetch_var_from_config_mk($filename,$section,$variable)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $section - the section name of the variable
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#
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# $variable - the variable name of which we want the value
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#
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# $value - the value of the variable
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sub _fetch_var_from_config_mk($$$)
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{
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my $filename = shift;
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my $section = shift;
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my $key = shift;
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my $val = "";
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my $result;
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$result = _get_parse_results($filename);
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if ($result->{ERROR_CODE} != 0) {
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die ($result->{ERROR_STR});
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}
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if (defined($result->{$section}{$key})) {
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$val = input::strtrim($result->{$section}{$key}{VAL});
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} elsif (defined($result->{DEFAULT}{$key})) {
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$val = input::strtrim($result->{DEFAULT}{$key}{VAL});
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}
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return $val;
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}
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###########################################################
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# The fetching function to fetch the array of values of a variable
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# out of the file
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#
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# $array = _fetch_array_from_config_mk($filename,$section,$variable)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $section - the section name of the variable
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#
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# $variable - the variable name of which we want the value
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#
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# $array - the array of values of the variable
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sub _fetch_array_from_config_mk($$$)
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{
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my $filename = shift;
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my $section = shift;
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my $key = shift;
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my $result;
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my $val = "";
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$result = _get_parse_results($filename);
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if ($result->{ERROR_CODE} != 0) {
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die ($result->{ERROR_STR});
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}
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if (defined($result->{$section}{$key})) {
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$val = $result->{$section}{$key}{VAL};
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} elsif (defined($result->{DEFAULT}{$key})) {
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$val = $result->{DEFAULT}{$key}{VAL};
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}
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return input::str2array($val);
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}
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###########################################################
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# A function for fetching MODULE_<module>_<parameter>
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# variables out of a config.mk file
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#
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# $value = module_get_var($filename,$module,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $module - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $value - the value of the variable
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sub module_get_var($$$)
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{
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my $filename = shift;
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my $module = shift;
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my $var = shift;
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my $section = "MODULE::".$module;
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return _fetch_var_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching MODULE_<module>_<parameter>
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# variables out of a config.mk file
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#
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# $array = module_get_array($filename,$module,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $module - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $array - the array of values of the variable
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sub module_get_array($$$)
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{
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my $filename = shift;
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my $module = shift;
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my $var = shift;
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my $section = "MODULE::".$module;
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return _fetch_array_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching SUBSYSTEM_<subsystem>_<parameter>
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# variables out of a config.mk file
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#
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# $value = subsystem_get_var($filename,$subsystem,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $subsystem - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $value - the value of the variable
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sub subsystem_get_var($$$)
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{
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my $filename = shift;
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my $subsystem = shift;
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my $var = shift;
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my $section = "SUBSYSTEM::".$subsystem;
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return _fetch_var_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching SUBSYSTEM_<subsystem>_<parameter>
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# variables out of a config.mk file
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#
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# $array = subsystem_get_array($filename,$subsystem,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $subsystem - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $array - the array of values of the variable
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sub subsystem_get_array($$$)
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{
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my $filename = shift;
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my $subsystem = shift;
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my $var = shift;
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my $section = "SUBSYSTEM::".$subsystem;
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return _fetch_array_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching LIBRARY_<library>_<parameter>
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# variables out of a config.mk file
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#
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# $value = library_get_var($filename,$library,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $library - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $value - the value of the variable
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sub library_get_var($$$)
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{
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my $filename = shift;
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my $library = shift;
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my $var = shift;
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my $section = "LIBRARY::".$library;
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return _fetch_var_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching LIBRARY_<library>_<parameter>
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# variables out of a config.mk file
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#
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# $array = library_get_array($filename,$library,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $library - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $array - the array of values of the variable
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sub library_get_array($$$)
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{
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my $filename = shift;
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my $library = shift;
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my $var = shift;
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my $section = "LIBRARY::".$library;
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return _fetch_array_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching BINARY_<binary>_<parameter>
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# variables out of a config.mk file
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#
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# $value = binary_get_var($filename,$binary,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $binary - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $value - the value of the variable
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sub binary_get_var($$$)
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{
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my $filename = shift;
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my $binary = shift;
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my $var = shift;
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my $section = "BINARY::".$binary;
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return _fetch_var_from_config_mk($filename,$section,$var);
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}
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###########################################################
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# A function for fetching BINARY_<binary>_<parameter>
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# variables out of a config.mk file
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#
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# $array = binary_get_array($filename,$binary,$parameter)
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#
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# $filename - the path of the config.mk file
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# which should be parsed
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#
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# $binary - the middle part of the variable name of which we want the value
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#
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# $parameter - the last part of the variable name of which we want the value
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#
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# $array - the array of values of the variable
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sub binary_get_array($$$)
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{
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my $filename = shift;
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my $binary = shift;
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my $var = shift;
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my $section = "BINARY::".$binary;
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return _fetch_array_from_config_mk($filename,$section,$var);
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}
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sub import_file($$)
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{
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my $input = shift;
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my $filename = shift;
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my $result = _parse_config_mk($filename);
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die ($result->{ERROR_STR}) unless $result->{ERROR_CODE} == 0;
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foreach my $section (keys %{$result}) {
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next if ($section eq "ERROR_CODE");
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my ($type, $name) = split(/::/, $section, 2);
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$input->{$name}{NAME} = $name;
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$input->{$name}{TYPE} = $type;
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foreach my $key (values %{$result->{$section}}) {
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$input->{$name}{$key->{KEY}} = [input::str2array($key->{VAL})];
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}
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}
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}
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1;
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