Add a script to embed config.h into installed headers.

[dxcommon.git] / scripts / gen-strtab.awk

diff --git a/scripts/gen-strtab.awk b/scripts/gen-strtab.awk
index 7e3de127972c066aa765bfdc3f882e7e4986d7fb..2265bb5d42d654aca2ea66aa4ad6d7a8987d139d 100755 (executable)
--- a/scripts/gen-strtab.awk
+++ b/scripts/gen-strtab.awk
@@ -23,6 +23,10 @@
 #   @nozero
 #     All strings will have a non-zero offset in the strtab.
 #
+#   @macro
+#     Instead of a variable declaration, the generated header will define an
+#     object-like macro that can be used as the initializer for a char array.
+#
 # A string is defined by beginning a line with one or two & characters, which
 # must be immediately followed by a C identifier.  Two & characters indicates
 # a string that should not be translated, as described below.  A nonempty
@@ -43,9 +47,12 @@
 #   - All other backslashes are deleted.  This can be used to prevent special
 #     handling of whitespace, # or & characters at the beginning of a line.
 #
-# The output defines a variable, strtab, which contains all of the strings,
-# and each identifier in the input is declared as an emumeration constant
-# whose value is the offset of the associated string within strtab.
+# Unless the @macro option is specified, the output defines a variable,
+# strtab, which contains all of the strings, and each identifier in the input
+# is declared as an emumeration constant whose value is the offset of the
+# associated string within strtab.  Otherwise, if the @macro option is
+# specified, no variables are defined and STRTAB_INITIALIZER object-like macro
+# may be used to initialize a char array with static storage duration.
 #
 # Normally, the generated source code wraps strings using the identity macro
 # N_(x), which has no effect on the resulting data structures but enables tools
@@ -74,6 +81,7 @@ END {
 
 BEGIN {
   opts["zero"] = 1
+  opts["macro"] = 0
   collected = ident = ""
   startline = endline = 0
   num_vars = 0
@@ -131,7 +139,7 @@ END {
 }
 
 END {
-  strtab = ""
+  strtab = cont = ""
   strtab_len = 0
   count = bucketsort(sorted_strings, strings)
   max = 0
@@ -140,15 +148,20 @@ END {
   print "#ifndef N_"
   print "#  define N_(x) x"
   print "#endif"
-  print "\nstatic const char strtab[] ="
+  if (opts["macro"]) {
+    cont = " \\";
+    print "\n#define STRTAB_INITIALIZER" cont;
+  } else {
+    print "\nstatic const char strtab[] =";
+  }
 
   for (i = 0; i < count; i++) {
     s = sorted_strings[i]
-    gsub(/\\\\/, "\2", s)
+    gsub(/\\\\/, "\2\2", s)
     if ((n = index(strtab "\1", s "\1")) > 0) {
       offsets[sorted_strings[i]] = real_length(substr(strtab, 1, n-1));
       if (!(sorted_strings[i] in nol10n))
-        print "\tSTR_L10N_(N_(\"" sorted_strings[i] "\"))";
+        print "\tSTR_L10N_(N_(\"" sorted_strings[i] "\"))" cont;
     } else if (strtab) {
       strtab = strtab "\1" s
       offsets[sorted_strings[i]] = strtab_len + 1
@@ -160,18 +173,18 @@ END {
     }
   }
 
-  gsub(/\2/, "\\\\", strtab);
+  gsub(/\2/, "\\", strtab);
   n = split(strtab, split_strtab, "\1");
   for (i = 1; i <= n; i++) {
     printf("\t%4s ", i > !!opts["zero"] ? "\"\\0\"" : "");
 
     if (split_strtab[i] in nol10n) {
-      print "\"" split_strtab[i] "\"";
+      print "\"" split_strtab[i] "\"" cont;
     } else {
-      print "N_(\"" split_strtab[i] "\")";
+      print "N_(\"" split_strtab[i] "\")" cont;
     }
   }
-  print "\t\"\";";
+  print "\t\"\"" substr(";", 1, !opts["macro"]);
 
   print "enum {"
   for (i = 0; i < num_vars; i++) {
@@ -187,13 +200,13 @@ END {
   print "\n#define STRTAB_MAX_OFFSET " max
 }
 
-# finish_input_string(strings, ident, val)
+# finish_string_input(strings, ident, val)
 #
 # Deal with backslash-escapes and special characters in val, then set
 # strings[ident] = val.
 function finish_string_input(strings, ident, val, n, tmpval)
 {
-  gsub(/\\\\/, "\1", val)
+  gsub(/\\\\/, "\1\1", val)
   val = val (endline > startline ? "\n" : "")
   gsub(/\\\n/, "", val)
 
@@ -208,7 +221,7 @@ function finish_string_input(strings, ident, val, n, tmpval)
   gsub(/"/, "\\\"", tmpval)
   gsub(/\t/, "\\t", tmpval)
   gsub(/\n/, "\\n", tmpval)
-  gsub(/\1/, "\\\\", tmpval)
+  gsub(/\1/, "\\", tmpval)
 
   strings[ident] = tmpval
   if (!current_l10n) {
@@ -219,7 +232,7 @@ function finish_string_input(strings, ident, val, n, tmpval)
 function real_length(s, t)
 {
   t = length(s)
-  return t - gsub(/\\./, "&", s)
+  return t - gsub(/\\.|\2\2/, "&", s)
 }
 
 # bucketsort(dst, src)