Adjusted many prototypes to contain `const' qualifiers.

diff --git a/src/otf.h b/src/otf.h
index 9be9fe5..efa37ff 100644 (file)
--- a/src/otf.h
+++ b/src/otf.h
@@ -1067,7 +1067,7 @@ typedef struct
 
     See also OTF_get_table() and OTF_close().  */
 
-extern OTF *OTF_open (char *name);
+extern OTF *OTF_open (const char *name);
 
 #include <ft2build.h>
 #include FT_FREETYPE_H
@@ -1104,7 +1104,7 @@ extern void OTF_close (OTF *otf);
 
     See also OTF_open().  */
 
-extern int OTF_get_table (OTF *otf, char *name);
+extern int OTF_get_table (OTF *otf, const char *name);
 
 /*** (2-4) OTF_check_table () */
 
@@ -1118,7 +1118,7 @@ extern int OTF_get_table (OTF *otf, char *name);
 
     See also OTF_open().  */
 
-extern int OTF_check_table (OTF *otf, char *name);
+extern int OTF_check_table (OTF *otf, const char *name);
 
 /*** (2-5) OTF_get_scripts () */
 
@@ -1165,7 +1165,7 @@ extern int OTF_get_features (OTF *otf, int gsubp);
 
 extern int OTF_check_features (OTF *otf, int gsubp,
                               OTF_Tag script, OTF_Tag language,
-                              OTF_Tag *features, int n_features);
+                              const OTF_Tag *features, int n_features);
 
 /*** (3) API for driving OTF */
 
@@ -1302,7 +1302,8 @@ extern int OTF_drive_gdef (OTF *otf, OTF_GlyphString *gstring);
     use OTF_drive_gsub_alternate().  */
 
 extern int OTF_drive_gsub (OTF *otf, OTF_GlyphString *gstring,
-                          char *script, char *language, char *features);
+                          const char *script, const char *language,
+                          const char *features);
 
 /*** (3-5) OTF_drive_gpos() */
 
@@ -1316,7 +1317,8 @@ extern int OTF_drive_gsub (OTF *otf, OTF_GlyphString *gstring,
     $GSTRING.  $FEATURES is a list of features to apply.  */
 
 extern int OTF_drive_gpos (OTF *otf, OTF_GlyphString *gstring,
-                          char *script, char *language, char *features);
+                          const char *script, const char *language,
+                          const char *features);
 
 /*** (3-6) OTF_drive_tables() */
 
@@ -1328,8 +1330,9 @@ extern int OTF_drive_gpos (OTF *otf, OTF_GlyphString *gstring,
     order, and update the glyphs string GSTRING.  */
 
 extern int OTF_drive_tables (OTF *otf, OTF_GlyphString *gstring,
-                            char *script, char *language,
-                            char *gsub_features, char *gpos_features);
+                            const char *script, const char *language,
+                            const char *gsub_features,
+                            const char *gpos_features);
 
 
 /*** (3-7) OTF_get_unicode()  */
@@ -1349,8 +1352,8 @@ extern int OTF_get_unicode (OTF *otf, OTF_GlyphID code);
     (Alternate Substituion).  */
 
 extern int OTF_drive_gsub_alternate (OTF *otf, OTF_GlyphString *gstring,
-                                    char *script, char *language,
-                                    char *features);
+                                    const char *script, const char *language,
+                                    const char *features);
 
 /*** (4) API for error handling ***/
 
@@ -1426,7 +1429,7 @@ extern int OTF_error;
     first, followed by a colon and a blank.  Then the message and a
     newline.  */
 
-extern void OTF_perror (char *prefix);
+extern void OTF_perror (const char *prefix);
 
 
 /*** (5) API miscellaneous ***/
@@ -1438,7 +1441,7 @@ extern void OTF_perror (char *prefix);
     NULL, return 0.  Otherwise, $NAME must be at least 4-byte length.
     Only the first 4 characters are took into an account.  */
 
-extern OTF_Tag OTF_tag (char *name);
+extern OTF_Tag OTF_tag (const char *name);
 
 /***
     Convert OTF tag to name string.