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Diffstat (limited to 'common/mkstrtable.awk')
| -rw-r--r-- | common/mkstrtable.awk | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/common/mkstrtable.awk b/common/mkstrtable.awk new file mode 100644 index 000000000..56e9bb881 --- /dev/null +++ b/common/mkstrtable.awk @@ -0,0 +1,185 @@ +# mkstrtable.awk +# Copyright (C) 2003, 2004 g10 Code GmbH +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see <http://www.gnu.org/licenses/>. +# +# As a special exception, g10 Code GmbH gives unlimited permission to +# copy, distribute and modify the C source files that are the output +# of mkstrtable.awk. You need not follow the terms of the GNU General +# Public License when using or distributing such scripts, even though +# portions of the text of mkstrtable.awk appear in them. The GNU +# General Public License (GPL) does govern all other use of the material +# that constitutes the mkstrtable.awk program. +# +# Certain portions of the mkstrtable.awk source text are designed to be +# copied (in certain cases, depending on the input) into the output of +# mkstrtable.awk. We call these the "data" portions. The rest of the +# mkstrtable.awk source text consists of comments plus executable code +# that decides which of the data portions to output in any given case. +# We call these comments and executable code the "non-data" portions. +# mkstrtable.h never copies any of the non-data portions into its output. +# +# This special exception to the GPL applies to versions of mkstrtable.awk +# released by g10 Code GmbH. When you make and distribute a modified version +# of mkstrtable.awk, you may extend this special exception to the GPL to +# apply to your modified version as well, *unless* your modified version +# has the potential to copy into its output some of the text that was the +# non-data portion of the version that you started with. (In other words, +# unless your change moves or copies text from the non-data portions to the +# data portions.) If your modification has such potential, you must delete +# any notice of this special exception to the GPL from your modified version. + +# This script outputs a source file that does define the following +# symbols: +# +# static const char msgstr[]; +# A string containing all messages in the list. +# +# static const int msgidx[]; +# A list of index numbers, one for each message, that points to the +# beginning of the string in msgstr. +# +# msgidxof (code); +# A macro that maps code numbers to idx numbers. If a DEFAULT MESSAGE +# is provided (see below), its index will be returned for unknown codes. +# Otherwise -1 is returned for codes that do not appear in the list. +# You can lookup the message with code CODE with: +# msgstr + msgidx[msgidxof (code)]. +# +# The input file has the following format: +# CODE1 ... MESSAGE1 (code nr, <tab>, something, <tab>, msg) +# CODE2 ... MESSAGE2 (code nr, <tab>, something, <tab>, msg) +# ... +# CODEn ... MESSAGEn (code nr, <tab>, something, <tab>, msg) +# ... DEFAULT-MESSAGE (<tab>, something, <tab>, fall-back msg) +# +# Comments (starting with # and ending at the end of the line) are removed, +# as is trailing whitespace. The last line is optional; if no DEFAULT +# MESSAGE is given, msgidxof will return the number -1 for unknown +# index numbers. +# +# The field to be used is specified with the variable "textidx" on +# the command line. It defaults to 2. +# +# The variable nogettext can be set to 1 to suppress gettext markers. +# +# The variable prefix can be used to prepend a string to each message. +# +# The variable namespace can be used to prepend a string to each +# variable and macro name. + +BEGIN { + FS = "[\t]+"; +# cpos holds the current position in the message string. + cpos = 0; +# msg holds the number of messages. + msg = 0; + print "/* Output of mkstrtable.awk. DO NOT EDIT. */"; + print ""; + header = 1; + if (textidx == 0) + textidx = 2; +# nogettext can be set to 1 to suppress gettext noop markers. +} + +/^#/ { next; } + +header { + if ($1 ~ /^[0123456789]+$/) + { + print "/* The purpose of this complex string table is to produce"; + print " optimal code with a minimum of relocations. */"; + print ""; + print "static const char " namespace "msgstr[] = "; + header = 0; + } + else + print; +} + +!header { + sub (/\#.+/, ""); + sub (/[ ]+$/, ""); # Strip trailing space and tab characters. + + if (/^$/) + next; + +# Print the string msgstr line by line. We delay output by one line to be able +# to treat the last line differently (see END). + if (last_msgstr) + { + if (nogettext) + print " \"" last_msgstr "\" \"\\0\""; + else + print " gettext_noop (\"" last_msgstr "\") \"\\0\""; + } + last_msgstr = prefix $textidx; + +# Remember the error code and msgidx of each error message. + code[msg] = $1; + pos[msg] = cpos; + cpos += length (last_msgstr) + 1; + msg++; + + if ($1 == "") + { + has_default = 1; + exit; + } +} +END { + if (has_default) + coded_msgs = msg - 1; + else + coded_msgs = msg; + + if (nogettext) + print " \"" prefix last_msgstr "\";"; + else + print " gettext_noop (\"" prefix last_msgstr "\");"; + print ""; + print "static const int " namespace "msgidx[] ="; + print " {"; + for (i = 0; i < coded_msgs; i++) + print " " pos[i] ","; + print " " pos[coded_msgs]; + print " };"; + print ""; + print "#define " namespace "msgidxof(code) (0 ? -1 \\"; + +# Gather the ranges. + skip = code[0]; + start = code[0]; + stop = code[0]; + for (i = 1; i < coded_msgs; i++) + { + if (code[i] == stop + 1) + stop++; + else + { + print " : ((code >= " start ") && (code <= " stop ")) ? (code - " \ + skip ") \\"; + skip += code[i] - stop - 1; + start = code[i]; + stop = code[i]; + } + } + print " : ((code >= " start ") && (code <= " stop ")) ? (code - " \ + skip ") \\"; + if (has_default) + print " : " stop + 1 " - " skip ")"; + else + print " : -1)"; + + } |