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author | Peter Breitenlohner <peb@mppmu.mpg.de> | 2014-06-18 11:14:28 +0000 |
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committer | Peter Breitenlohner <peb@mppmu.mpg.de> | 2014-06-18 11:14:28 +0000 |
commit | e6efe57c67e9faa47eed598ac02527eac833f6c7 (patch) | |
tree | bd6ec7e7cf66ead19d114abe9df459a3c697f7e2 /Build/source/libs/libpng/libpng-1.6.12/scripts/checksym.awk | |
parent | 0c2f0333a4e539325da80cdf3fb182cd17134665 (diff) |
libpng 1.6.12
git-svn-id: svn://tug.org/texlive/trunk@34275 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/libpng/libpng-1.6.12/scripts/checksym.awk')
-rwxr-xr-x | Build/source/libs/libpng/libpng-1.6.12/scripts/checksym.awk | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/Build/source/libs/libpng/libpng-1.6.12/scripts/checksym.awk b/Build/source/libs/libpng/libpng-1.6.12/scripts/checksym.awk new file mode 100755 index 00000000000..fe3af55e05e --- /dev/null +++ b/Build/source/libs/libpng/libpng-1.6.12/scripts/checksym.awk @@ -0,0 +1,173 @@ +#!/bin/awk -f +# Check a list of symbols against the master definition +# (official) list. Arguments: +# +# awk -f checksym.awk official-def list-to-check +# +# Output is a file in the current directory called 'symbols.new', +# the value of the awk variable "of" (which can be changed on the +# command line if required.) stdout holds error messages. Error +# code indicates success or failure. +# +# NOTE: this is a pure, old fashioned, awk script. It will +# work with any awk + +BEGIN{ + err=0 + master="" # master file + official[1] = "" # defined symbols from master file + symbol[1] = "" # defined symbols from png.h + removed[1] = "" # removed symbols from png.h + lasto = 0 # last ordinal value from png.h + mastero = 0 # highest ordinal in master file + symbolo = 0 # highest ordinal in png.h + missing = "error"# log an error on missing symbols + of="symbols.new" # default to a fixed name +} + +# Read existing definitions from the master file (the first +# file on the command line.) This must be a def file and it +# has definition lines (others are ignored) of the form: +# +# symbol @ordinal +# +master == "" { + master = FILENAME +} +FILENAME==master && NF==2 && $2~/^@/ && $1!~/^;/ { + o=0+substr($2,2) + if (o > 0) { + if (official[o] == "") { + official[o] = $1 + if (o > mastero) mastero = o + next + } else + print master ": duplicated symbol:", official[o] ":", $0 + } else + print master ": bad export line format:", $0 + err = 1 +} +FILENAME==master && $1==";missing" && NF==2{ + # This allows the master file to control how missing symbols + # are handled; symbols that aren't in either the master or + # the new file. Valid values are 'ignore', 'warning' and + # 'error' + missing = $2 +} +FILENAME==master { + next +} + +# Read new definitions, these are free form but the lines must +# just be symbol definitions. Lines will be commented out for +# 'removed' symbols, introduced in png.h using PNG_REMOVED rather +# than PNG_EXPORT. Use symbols.dfn or pngwin.dfn to generate the +# input file. +# +# symbol @ordinal # two fields, exported symbol +# ; symbol @ordinal # three fields, removed symbol +# ; @ordinal # two fields, the last ordinal +NF==2 && $1 == ";" && $2 ~ /^@[1-9][0-9]*$/ { # last ordinal + o=0+substr($2,2) + if (lasto == 0 || lasto == o) + lasto=o + else { + print "png.h: duplicated last ordinal:", lasto, o + err = 1 + } + next +} +NF==3 && $1 == ";" && $3 ~ /^@[1-9][0-9]*$/ { # removed symbol + o=0+substr($3,2) + if (removed[o] == "" || removed[o] == $2) { + removed[o] = $2 + if (o > symbolo) symbolo = o + } else { + print "png.h: duplicated removed symbol", o ": '" removed[o] "' != '" $2 "'" + err = 1 + } + next +} +NF==2 && $2 ~ /^@[1-9][0-9]*$/ { # exported symbol + o=0+substr($2,2) + if (symbol[o] == "" || symbol[o] == $1) { + symbol[o] = $1 + if (o > symbolo) symbolo = o + } else { + print "png.h: duplicated symbol", o ": '" symbol[o] "' != '" $1 "'" + err = 1 + } +} +{ + next # skip all other lines +} + +# At the end check for symbols marked as both duplicated and removed +END{ + if (symbolo > lasto) { + print "highest symbol ordinal in png.h,", symbolo ", exceeds last ordinal from png.h", lasto + err = 1 + } + if (mastero > lasto) { + print "highest symbol ordinal in", master ",", mastero ", exceeds last ordinal from png.h", lasto + err = 1 + } + unexported=0 + # Add a standard header to symbols.new: + print ";Version INSERT-VERSION-HERE" >of + print ";--------------------------------------------------------------" >of + print "; LIBPNG symbol list as a Win32 DEF file" >of + print "; Contains all the symbols that can be exported from libpng" >of + print ";--------------------------------------------------------------" >of + print "LIBRARY" >of + print "" >of + print "EXPORTS" >of + + for (o=1; o<=lasto; ++o) { + if (symbol[o] == "" && removed[o] == "") { + if (unexported == 0) unexported = o + if (official[o] == "") { + # missing in export list too, so ok + if (o < lasto) continue + } + } + if (unexported != 0) { + # Symbols in the .def but not in the new file are errors, but + # the 'unexported' symbols aren't in either. By default this + # is an error too (see the setting of 'missing' at the start), + # but this can be reset on the command line or by stuff in the + # file - see the comments above. + if (missing != "ignore") { + if (o-1 > unexported) + print "png.h:", missing ": missing symbols:", unexported "-" o-1 + else + print "png.h:", missing ": missing symbol:", unexported + if (missing != "warning") + err = 1 + } + unexported = 0 + } + if (symbol[o] != "" && removed[o] != "") { + print "png.h: symbol", o, "both exported as '" symbol[o] "' and removed as '" removed[o] "'" + err = 1 + } else if (symbol[o] != official[o]) { + # either the symbol is missing somewhere or it changed + err = 1 + if (symbol[o] == "") + print "png.h: symbol", o, "is exported as '" official[o] "' in", master + else if (official[o] == "") + print "png.h: exported symbol", o, "'" symbol[o] "' not present in", master + else + print "png.h: exported symbol", o, "'" symbol[o] "' exists as '" official[o] "' in", master + } + + # Finally generate symbols.new + if (symbol[o] != "") + print " " symbol[o], "@" o > of + } + + if (err != 0) { + print "*** A new list is in", of, "***" + exit 1 + } +} |