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-rw-r--r--libraries/irrlicht-1.8/source/Irrlicht/libpng/scripts/checksym.awk161
1 files changed, 161 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/libpng/scripts/checksym.awk b/libraries/irrlicht-1.8/source/Irrlicht/libpng/scripts/checksym.awk
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1#!/bin/awk -f
2# Check a list of symbols against the master definition
3# (official) list. Arguments:
4#
5# awk -f checksym.awk official-def list-to-check
6#
7# Output is a file in the current directory called 'symbols.new',
8# stdout holds error messages. Error code indicates success or
9# failure.
10#
11# NOTE: this is a pure, old fashioned, awk script. It will
12# work with any awk
13
14BEGIN{
15 err=0
16 master="" # master file
17 official[1] = "" # defined symbols from master file
18 symbol[1] = "" # defined symbols from png.h
19 removed[1] = "" # removed symbols from png.h
20 lasto = 0 # last ordinal value from png.h
21 mastero = 0 # highest ordinal in master file
22 symbolo = 0 # highest ordinal in png.h
23 missing = "error"# log an error on missing symbols
24}
25
26# Read existing definitions from the master file (the first
27# file on the command line.) This must be a def file and it
28# has definition lines (others are ignored) of the form:
29#
30# symbol @ordinal
31#
32master == "" {
33 master = FILENAME
34}
35FILENAME==master && NF==2 && $2~/^@/ && $1!~/^;/ {
36 o=0+substr($2,2)
37 if (o > 0) {
38 if (official[o] == "") {
39 official[o] = $1
40 if (o > mastero) mastero = o
41 next
42 } else
43 print master ": duplicated symbol:", official[o] ":", $0
44 } else
45 print master ": bad export line format:", $0
46 err = 1
47}
48FILENAME==master && $1==";missing" && NF==2{
49 # This allows the master file to control how missing symbols
50 # are handled; symbols that aren't in either the master or
51 # the new file. Valid values are 'ignore', 'warning' and
52 # 'error'
53 missing = $2
54}
55FILENAME==master {
56 next
57}
58
59# Read new definitions, these are free form but the lines must
60# just be symbol definitions. Lines will be commented out for
61# 'removed' symbols, introduced in png.h using PNG_REMOVED rather
62# than PNG_EXPORT. Use symbols.dfn or pngwin.dfn to generate the
63# input file.
64#
65# symbol @ordinal # two fields, exported symbol
66# ; symbol @ordinal # three fields, removed symbol
67# ; @ordinal # two fields, the last ordinal
68NF==2 && $1 == ";" && $2 ~ /^@[1-9][0-9]*$/ { # last ordinal
69 o=0+substr($2,2)
70 if (lasto == 0 || lasto == o)
71 lasto=o
72 else {
73 print "png.h: duplicated last ordinal:", lasto, o
74 err = 1
75 }
76 next
77}
78NF==3 && $1 == ";" && $3 ~ /^@[1-9][0-9]*$/ { # removed symbol
79 o=0+substr($3,2)
80 if (removed[o] == "" || removed[o] == $2) {
81 removed[o] = $2
82 if (o > symbolo) symbolo = o
83 } else {
84 print "png.h: duplicated removed symbol", o ": '" removed[o] "' != '" $2 "'"
85 err = 1
86 }
87 next
88}
89NF==2 && $2 ~ /^@[1-9][0-9]*$/ { # exported symbol
90 o=0+substr($2,2)
91 if (symbol[o] == "" || symbol[o] == $1) {
92 symbol[o] = $1
93 if (o > symbolo) symbolo = o
94 } else {
95 print "png.h: duplicated symbol", o ": '" symbol[o] "' != '" $1 "'"
96 err = 1
97 }
98}
99{
100 next # skip all other lines
101}
102
103# At the end check for symbols marked as both duplicated and removed
104END{
105 if (symbolo > lasto) {
106 print "highest symbol ordinal in png.h,", symbolo ", exceeds last ordinal from png.h", lasto
107 err = 1
108 }
109 if (mastero > lasto) {
110 print "highest symbol ordinal in", master ",", mastero ", exceeds last ordinal from png.h", lasto
111 err = 1
112 }
113 unexported=0
114 for (o=1; o<=lasto; ++o) {
115 if (symbol[o] == "" && removed[o] == "") {
116 if (unexported == 0) unexported = o
117 if (official[o] == "") {
118 # missing in export list too, so ok
119 if (o < lasto) continue
120 }
121 }
122 if (unexported != 0) {
123 # Symbols in the .def but not in the new file are errors, but
124 # the 'unexported' symbols aren't in either. By default this
125 # is an error too (see the setting of 'missing' at the start),
126 # but this can be reset on the command line or by stuff in the
127 # file - see the comments above.
128 if (missing != "ignore") {
129 if (o-1 > unexported)
130 print "png.h:", missing ": missing symbols:", unexported "-" o-1
131 else
132 print "png.h:", missing ": missing symbol:", unexported
133 if (missing != "warning")
134 err = 1
135 }
136 unexported = 0
137 }
138 if (symbol[o] != "" && removed[o] != "") {
139 print "png.h: symbol", o, "both exported as '" symbol[o] "' and removed as '" removed[o] "'"
140 err = 1
141 } else if (symbol[o] != official[o]) {
142 # either the symbol is missing somewhere or it changed
143 err = 1
144 if (symbol[o] == "")
145 print "png.h: symbol", o, "is exported as '" official[o] "' in", master
146 else if (official[o] == "")
147 print "png.h: exported symbol", o, "'" symbol[o] "' not present in", master
148 else
149 print "png.h: exported symbol", o, "'" symbol[o] "' exists as '" official[o] "' in", master
150 }
151
152 # Finally generate symbols.new
153 if (symbol[o] != "")
154 print " " symbol[o], "@" o > "symbols.new"
155 }
156
157 if (err != 0) {
158 print "*** A new list is in symbols.new ***"
159 exit 1
160 }
161}