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#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pango/pango-enum-types.h>
#include <pango/pango-script.h>
#include <pango/pango-types.h>
#include <pango/pango-utils.h>
PangoScript script_for_file (const char *base_dir,
const char *file_part);
const char *get_script_name (PangoScript script)
{
static GEnumClass *class = NULL;
GEnumValue *value;
if (!class)
class = g_type_class_ref (PANGO_TYPE_SCRIPT);
value = g_enum_get_value (class, script);
g_assert (value);
return value->value_name;
}
int fail (char *format, ...)
{
va_list vap;
va_start (vap, format);
vfprintf (stderr, format, vap);
va_end (vap);
exit (1);
}
gboolean scan_hex (const char **str, gunichar *result)
{
const char *end;
*result = strtol (*str, (char **)&end, 16);
if (end == *str)
return FALSE;
*str = end;
return TRUE;
}
void warn_mismatch (const char *file_part,
PangoScript script1,
PangoScript script2)
{
g_printerr ("%s has characters for both %s and %s\n",
file_part, get_script_name (script1), get_script_name (script2));
}
PangoScript script_for_line (const char *base_dir,
const char *file_part,
const char *str)
{
gunichar start_char;
gunichar end_char;
gunichar ch;
PangoScript result = PANGO_SCRIPT_COMMON;
const char *p = str;
if (g_str_has_prefix (str, "include"))
{
GString *file_part = g_string_new (NULL);
str += strlen ("include");
if (!pango_skip_space (&str))
goto err;
if (!pango_scan_string (&str, file_part) ||
pango_skip_space (&str))
goto err;
result = script_for_file (base_dir, file_part->str);
g_string_free (file_part, TRUE);
return result;
}
/* Format is HEX_DIGITS or HEX_DIGITS-HEX_DIGITS */
if (!scan_hex (&p, &start_char))
goto err;
end_char = start_char;
pango_skip_space (&p);
if (*p == '-')
{
p++;
if (!scan_hex (&p, &end_char))
goto err;
pango_skip_space (&p);
}
if (*p != '\0')
goto err;
for (ch = start_char; ch <= end_char; ch++)
{
PangoScript script = pango_script_for_unichar (ch);
if (script != PANGO_SCRIPT_COMMON &&
script != PANGO_SCRIPT_INHERITED)
{
if (result != PANGO_SCRIPT_COMMON && script != result)
{
warn_mismatch (file_part, script, result);
return PANGO_SCRIPT_INVALID_CODE;
}
result = script;
}
}
return result;
err:
fail ("While processing '%s', cannot parse line: '%s'\n", file_part, str);
return PANGO_SCRIPT_INVALID_CODE; /* Not reached */
}
PangoScript script_for_file (const char *base_dir,
const char *file_part)
{
GError *error = NULL;
char *filename = g_build_filename (base_dir, file_part, NULL);
GIOChannel *channel = g_io_channel_new_file (filename, "r", &error);
GIOStatus status = G_IO_STATUS_NORMAL;
PangoScript result = PANGO_SCRIPT_COMMON;
if (!channel)
fail ("Error opening '%s': %s\n", filename, error);
/* The files have ISO-8859-1 copyright signs in them */
if (!g_io_channel_set_encoding (channel, "ISO-8859-1", &error))
fail ("Cannot set encoding when reading '%s': %s\n", filename, error);
while (status == G_IO_STATUS_NORMAL)
{
char *str;
size_t term;
char *comment;
status = g_io_channel_read_line (channel, &str, NULL, &term, &error);
switch (status)
{
case G_IO_STATUS_NORMAL:
str[term] = '\0';
comment = strchr (str, '#');
if (comment)
*comment = '\0';
g_strstrip (str);
if (str[0] != '\0') /* Empty */
{
PangoScript script = script_for_line (base_dir, file_part, str);
if (script != PANGO_SCRIPT_COMMON &&
script != PANGO_SCRIPT_INHERITED)
{
if (result != PANGO_SCRIPT_COMMON && script != result)
{
warn_mismatch (file_part, script, result);
result = PANGO_SCRIPT_INVALID_CODE;
status = G_IO_STATUS_EOF;
}
else
result = script;
}
}
g_free (str);
break;
case G_IO_STATUS_EOF:
break;
case G_IO_STATUS_ERROR:
fail ("Error reading '%s': %s\n", filename, error->message);
break;
case G_IO_STATUS_AGAIN:
g_assert_not_reached ();
break;
}
}
if (!g_io_channel_shutdown (channel, FALSE, &error))
fail ("Error closing '%s': %s\n", channel, error);
g_free (filename);
return result;
}
int main (int argc, char **argv)
{
GDir *dir;
GError *error = NULL;
g_type_init ();
if (argc != 2)
fail ("Usage: gen-script-for-lang DIR > script-for-lang.h\n");
dir = g_dir_open (argv[1], 0, &error);
if (!dir)
fail ("%s\n", error->message);
while (TRUE)
{
const char *name = g_dir_read_name (dir);
if (!name)
break;
if (g_str_has_suffix (name, ".orth"))
{
char *langpart = g_strndup (name,
strlen (name) - strlen (".orth"));
PangoLanguage *lang = pango_language_from_string (langpart);
PangoScript script;
script = script_for_file (argv[1], name);
g_print ("%s - %s\n",
pango_language_to_string (lang),
get_script_name (script));
g_free (langpart);
}
}
g_dir_close (dir);
return 0;
}
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