Use c-ctype functions in lexer.

Lexical analysis should not depend upon the locale,
so change is* functions from ctype.h to the c_is*
counterparts from gnulib.  This should avoid potential
i18n issues.

diff --git a/src/language/lexer/lexer.c b/src/language/lexer/lexer.c
index cc8cab808948973b08e9145f337edf8028afb70b..16195b0dd22303a92f5c3075488f58ec8da5d088 100644 (file)
--- a/src/language/lexer/lexer.c
+++ b/src/language/lexer/lexer.c
@@ -17,7 +17,8 @@
 #include <config.h>
 #include "lexer.h"
 #include <libpspp/message.h>
-#include <ctype.h>
+#include <c-ctype.h>
+#include <c-strtod.h>
 #include <errno.h>
 #include <limits.h>
 #include <math.h>
@@ -187,7 +188,7 @@ lex_get (struct lexer *lexer)
   for (;;)
     {
       /* Skip whitespace. */
-         while (isspace ((unsigned char) *lexer->prog))
+         while (c_isspace ((unsigned char) *lexer->prog))
            lexer->prog++;
 
          if (*lexer->prog)
@@ -244,10 +245,10 @@ lex_get (struct lexer *lexer)
            if (*lexer->prog == '-')
              {
                ds_put_char (&lexer->tokstr, *lexer->prog++);
-               while (isspace ((unsigned char) *lexer->prog))
+               while (c_isspace ((unsigned char) *lexer->prog))
                  lexer->prog++;
 
-               if (!isdigit ((unsigned char) *lexer->prog) && *lexer->prog != '.')
+               if (!c_isdigit ((unsigned char) *lexer->prog) && *lexer->prog != '.')
                  {
                    lexer->token = '-';
                    break;
@@ -258,12 +259,12 @@ lex_get (struct lexer *lexer)
               lexer->token = T_POS_NUM;
 
            /* Parse the number, copying it into tokstr. */
-           while (isdigit ((unsigned char) *lexer->prog))
+           while (c_isdigit ((unsigned char) *lexer->prog))
              ds_put_char (&lexer->tokstr, *lexer->prog++);
            if (*lexer->prog == '.')
              {
                ds_put_char (&lexer->tokstr, *lexer->prog++);
-               while (isdigit ((unsigned char) *lexer->prog))
+               while (c_isdigit ((unsigned char) *lexer->prog))
                  ds_put_char (&lexer->tokstr, *lexer->prog++);
              }
            if (*lexer->prog == 'e' || *lexer->prog == 'E')
@@ -271,12 +272,12 @@ lex_get (struct lexer *lexer)
                ds_put_char (&lexer->tokstr, *lexer->prog++);
                if (*lexer->prog == '+' || *lexer->prog == '-')
                  ds_put_char (&lexer->tokstr, *lexer->prog++);
-               while (isdigit ((unsigned char) *lexer->prog))
+               while (c_isdigit ((unsigned char) *lexer->prog))
                  ds_put_char (&lexer->tokstr, *lexer->prog++);
              }
 
            /* Parse as floating point. */
-           lexer->tokval = strtod (ds_cstr (&lexer->tokstr), &tail);
+           lexer->tokval = c_strtod (ds_cstr (&lexer->tokstr), &tail);
            if (*tail)
              {
                msg (SE, _("%s does not form a valid number."),
@@ -383,7 +384,7 @@ lex_get (struct lexer *lexer)
             }
           else
             {
-              if (isgraph ((unsigned char) *lexer->prog))
+              if (c_isgraph ((unsigned char) *lexer->prog))
                 msg (SE, _("Bad character in input: `%c'."), *lexer->prog++);
               else
                 msg (SE, _("Bad character in input: `\\%o'."), *lexer->prog++);
@@ -691,7 +692,7 @@ lex_look_ahead (struct lexer *lexer)
 
       for (;;)
        {
-         while (isspace ((unsigned char) *lexer->prog))
+         while (c_isspace ((unsigned char) *lexer->prog))
            lexer->prog++;
          if (*lexer->prog)
            break;
@@ -866,7 +867,7 @@ lex_preprocess_line (struct string *line,
   if (syntax == GETL_BATCH)
     {
       int first = ds_first (line);
-      *line_starts_command = !isspace (first);
+      *line_starts_command = !c_isspace (first);
       if (first == '+' || first == '-')
         *ds_data (line) = ' ';
     }
@@ -951,7 +952,7 @@ lex_token_representation (struct lexer *lexer)
        char *sp, *dp;
 
        for (sp = ds_cstr (&lexer->tokstr); sp < ds_end (&lexer->tokstr); sp++)
-         if (!isprint ((unsigned char) *sp))
+         if (!c_isprint ((unsigned char) *sp))
            {
              hexstring = 1;
              break;
@@ -1165,7 +1166,7 @@ parse_string (struct lexer *lexer, enum string_type type)
        break;
       for (;;)
        {
-         while (isspace ((unsigned char) *lexer->prog))
+         while (c_isspace ((unsigned char) *lexer->prog))
            lexer->prog++;
          if (*lexer->prog)
            break;
@@ -1187,7 +1188,7 @@ parse_string (struct lexer *lexer, enum string_type type)
        break;
       for (;;)
        {
-         while (isspace ((unsigned char) *lexer->prog))
+         while (c_isspace ((unsigned char) *lexer->prog))
            lexer->prog++;
          if (*lexer->prog)
            break;