Color and styling handling.

2 files changed, 368 insertions, 0 deletions

diff --git a/gettext-tools/src/color.c b/gettext-tools/src/color.c
new file mode 100644
index 0000000..b1ce024
--- /dev/null
+++ b/gettext-tools/src/color.c
@@ -0,0 +1,310 @@
+/* Color and styling handling.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2006.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include "color.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "term-ostream.h"
+#include "xalloc.h"
+#include "relocatable.h"
+#include "pathname.h"
+
+
+/* Whether to output a test page.  */
+bool color_test_mode;
+
+/* Color option.  */
+enum color_option color_mode = color_tty;
+
+/* Style to use when coloring.  */
+const char *style_file_name;
+
+/* --color argument handling.  Return an error indicator.  */
+bool
+handle_color_option (const char *option)
+{
+  if (option != NULL)
+    {
+      if (strcmp (option, "never") == 0 || strcmp (option, "no") == 0)
+	color_mode = color_no;
+      else if (strcmp (option, "auto") == 0 || strcmp (option, "tty") == 0)
+	color_mode = color_tty;
+      else if (strcmp (option, "always") == 0 || strcmp (option, "yes") == 0)
+	color_mode = color_yes;
+      else if (strcmp (option, "html") == 0)
+	color_mode = color_html;
+      else if (strcmp (option, "test") == 0)
+	color_test_mode = true;
+      else
+	{
+	  fprintf (stderr, "invalid --color argument: %s\n", option);
+	  return true;
+	}
+    }
+  else
+    /* --color is equivalent to --color=yes.  */
+    color_mode = color_yes;
+  return false;
+}
+
+/* --style argument handling.  */
+void
+handle_style_option (const char *option)
+{
+  style_file_name = option;
+}
+
+/* Print a color test page.  */
+void
+print_color_test ()
+{
+  /* Code copied from test-term-ostream.c.  */
+  static struct { const char *name; term_color_t c; int r; int g; int b; }
+         colors[] =
+    {
+      { "black",   -2,   0,   0,   0 },
+      { "blue",    -2,   0,   0, 255 },
+      { "green",   -2,   0, 255,   0 },
+      { "cyan",    -2,   0, 255, 255 },
+      { "red",     -2, 255,   0,   0 },
+      { "magenta", -2, 255,   0, 255 },
+      { "yellow",  -2, 255, 255,   0 },
+      { "white",   -2, 255, 255, 255 },
+      { "default", COLOR_DEFAULT }
+    };
+  term_ostream_t stream;
+  int i, row, col;
+
+  stream = term_ostream_create (1, "stdout");
+
+  for (i = 0; i < 8; i++)
+    colors[i].c =
+      term_ostream_rgb_to_color (stream, colors[i].r, colors[i].g, colors[i].b);
+
+  ostream_write_str (stream, "Colors (foreground/background):\n");
+  ostream_write_str (stream, "       ");
+  for (col = 0; col <= 8; col++)
+    {
+      const char *name = colors[col].name;
+      ostream_write_str (stream, "|");
+      ostream_write_str (stream, name);
+      ostream_write_mem (stream, "        ", 7 - strlen (name));
+    }
+  ostream_write_str (stream, "\n");
+  for (row = 0; row <= 8; row++)
+    {
+      const char *name = colors[row].name;
+      ostream_write_str (stream, name);
+      ostream_write_mem (stream, "        ", 7 - strlen (name));
+      for (col = 0; col <= 8; col++)
+	{
+	  term_color_t row_color = colors[row].c;
+	  term_color_t col_color = colors[col].c;
+
+	  ostream_write_str (stream, "|");
+	  term_ostream_set_color (stream, row_color);
+	  term_ostream_set_bgcolor (stream, col_color);
+	  if (!(term_ostream_get_color (stream) == row_color
+		&& term_ostream_get_bgcolor (stream) == col_color))
+	    abort ();
+	  ostream_write_str (stream, " Words ");
+	  term_ostream_set_color (stream, COLOR_DEFAULT);
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	  if (!(term_ostream_get_color (stream) == COLOR_DEFAULT
+		&& term_ostream_get_bgcolor (stream) == COLOR_DEFAULT))
+	    abort ();
+	}
+      ostream_write_str (stream, "\n");
+    }
+  ostream_write_str (stream, "\n");
+
+  ostream_write_str (stream, "Colors (hue/saturation):\n");
+  /* Hue from 0 to 1.  */
+  for (row = 0; row <= 17; row++)
+    {
+      for (col = 0; col <= 64; col++)
+	{
+	  int r = 255;
+	  int b = (int) (255.0f / 64.0f * col + 0.5f);
+	  int g = b + (int) (row / 17.0f * (r - b) + 0.5f);
+	  term_color_t c = term_ostream_rgb_to_color (stream, r, g, b);
+	  term_ostream_set_bgcolor (stream, c);
+	  ostream_write_str (stream, " ");
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	}
+      ostream_write_str (stream, "\n");
+    }
+  /* Hue from 1 to 2.  */
+  for (row = 17; row >= 0; row--)
+    {
+      for (col = 0; col <= 64; col++)
+	{
+	  int g = 255;
+	  int b = (int) (255.0f / 64.0f * col + 0.5f);
+	  int r = b + (int) (row / 17.0f * (g - b) + 0.5f);
+	  term_color_t c = term_ostream_rgb_to_color (stream, r, g, b);
+	  term_ostream_set_bgcolor (stream, c);
+	  ostream_write_str (stream, " ");
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	}
+      ostream_write_str (stream, "\n");
+    }
+  /* Hue from 2 to 3.  */
+  for (row = 0; row <= 17; row++)
+    {
+      for (col = 0; col <= 64; col++)
+	{
+	  int g = 255;
+	  int r = (int) (255.0f / 64.0f * col + 0.5f);
+	  int b = r + (int) (row / 17.0f * (g - r) + 0.5f);
+	  term_color_t c = term_ostream_rgb_to_color (stream, r, g, b);
+	  term_ostream_set_bgcolor (stream, c);
+	  ostream_write_str (stream, " ");
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	}
+      ostream_write_str (stream, "\n");
+    }
+  /* Hue from 3 to 4.  */
+  for (row = 17; row >= 0; row--)
+    {
+      for (col = 0; col <= 64; col++)
+	{
+	  int b = 255;
+	  int r = (int) (255.0f / 64.0f * col + 0.5f);
+	  int g = r + (int) (row / 17.0f * (b - r) + 0.5f);
+	  term_color_t c = term_ostream_rgb_to_color (stream, r, g, b);
+	  term_ostream_set_bgcolor (stream, c);
+	  ostream_write_str (stream, " ");
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	}
+      ostream_write_str (stream, "\n");
+    }
+  /* Hue from 4 to 5.  */
+  for (row = 0; row <= 17; row++)
+    {
+      for (col = 0; col <= 64; col++)
+	{
+	  int b = 255;
+	  int g = (int) (255.0f / 64.0f * col + 0.5f);
+	  int r = g + (int) (row / 17.0f * (b - g) + 0.5f);
+	  term_color_t c = term_ostream_rgb_to_color (stream, r, g, b);
+	  term_ostream_set_bgcolor (stream, c);
+	  ostream_write_str (stream, " ");
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	}
+      ostream_write_str (stream, "\n");
+    }
+  /* Hue from 5 to 6.  */
+  for (row = 17; row >= 0; row--)
+    {
+      for (col = 0; col <= 64; col++)
+	{
+	  int r = 255;
+	  int g = (int) (255.0f / 64.0f * col + 0.5f);
+	  int b = g + (int) (row / 17.0f * (r - g) + 0.5f);
+	  term_color_t c = term_ostream_rgb_to_color (stream, r, g, b);
+	  term_ostream_set_bgcolor (stream, c);
+	  ostream_write_str (stream, " ");
+	  term_ostream_set_bgcolor (stream, COLOR_DEFAULT);
+	}
+      ostream_write_str (stream, "\n");
+    }
+  ostream_write_str (stream, "\n");
+
+  ostream_write_str (stream, "Weights:\n");
+  term_ostream_set_weight (stream, WEIGHT_NORMAL);
+  if (term_ostream_get_weight (stream) != WEIGHT_NORMAL)
+    abort ();
+  ostream_write_str (stream, "normal, ");
+  term_ostream_set_weight (stream, WEIGHT_BOLD);
+  if (term_ostream_get_weight (stream) != WEIGHT_BOLD)
+    abort ();
+  ostream_write_str (stream, "bold, ");
+  term_ostream_set_weight (stream, WEIGHT_DEFAULT);
+  if (term_ostream_get_weight (stream) != WEIGHT_DEFAULT)
+    abort ();
+  ostream_write_str (stream, "default \n");
+  ostream_write_str (stream, "\n");
+
+  ostream_write_str (stream, "Postures:\n");
+  term_ostream_set_posture (stream, POSTURE_NORMAL);
+  if (term_ostream_get_posture (stream) != POSTURE_NORMAL)
+    abort ();
+  ostream_write_str (stream, "normal, ");
+  term_ostream_set_posture (stream, POSTURE_ITALIC);
+  if (term_ostream_get_posture (stream) != POSTURE_ITALIC)
+    abort ();
+  ostream_write_str (stream, "italic, ");
+  term_ostream_set_posture (stream, POSTURE_DEFAULT);
+  if (term_ostream_get_posture (stream) != POSTURE_DEFAULT)
+    abort ();
+  ostream_write_str (stream, "default \n");
+  ostream_write_str (stream, "\n");
+
+  ostream_write_str (stream, "Text decorations:\n");
+  term_ostream_set_underline (stream, UNDERLINE_OFF);
+  if (term_ostream_get_underline (stream) != UNDERLINE_OFF)
+    abort ();
+  ostream_write_str (stream, "normal, ");
+  term_ostream_set_underline (stream, UNDERLINE_ON);
+  if (term_ostream_get_underline (stream) != UNDERLINE_ON)
+    abort ();
+  ostream_write_str (stream, "underlined, ");
+  term_ostream_set_underline (stream, UNDERLINE_DEFAULT);
+  if (term_ostream_get_underline (stream) != UNDERLINE_DEFAULT)
+    abort ();
+  ostream_write_str (stream, "default \n");
+  ostream_write_str (stream, "\n");
+
+  ostream_free (stream);
+}
+
+/* Assign a default value to style_file_name if necessary.  */
+void
+style_file_prepare ()
+{
+  if (style_file_name == NULL)
+    {
+      const char *user_preference = getenv ("PO_STYLE");
+
+      if (user_preference != NULL && user_preference[0] != '\0')
+	style_file_name = xstrdup (user_preference);
+      else
+	{
+	  const char *gettextdatadir;
+
+	  /* Make it possible to override the po-default.css location.  This is
+	     necessary for running the testsuite before "make install".  */
+	  gettextdatadir = getenv ("GETTEXTDATADIR");
+	  if (gettextdatadir == NULL || gettextdatadir[0] == '\0')
+	    gettextdatadir = relocate (GETTEXTDATADIR);
+
+	  style_file_name =
+	    concatenated_pathname (gettextdatadir, "styles/po-default.css",
+				   NULL);
+	}
+    }
+}
diff --git a/gettext-tools/src/color.h b/gettext-tools/src/color.h
new file mode 100644
index 0000000..959ebaf
--- /dev/null
+++ b/gettext-tools/src/color.h
@@ -0,0 +1,58 @@
+/* Color and styling handling.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2006.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _COLOR_H
+#define _COLOR_H
+
+#include <stdbool.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Whether to output a test page.  */
+extern DLL_VARIABLE bool color_test_mode;
+
+/* Color option.  */
+enum color_option { color_no, color_tty, color_yes, color_html };
+extern DLL_VARIABLE enum color_option color_mode;
+
+/* Style to use when coloring.  */
+extern DLL_VARIABLE const char *style_file_name;
+
+/* --color argument handling.  Return an error indicator.  */
+extern bool handle_color_option (const char *option);
+
+/* --style argument handling.  */
+extern void handle_style_option (const char *option);
+
+/* Print a color test page.  */
+extern void print_color_test (void);
+
+/* Assign a default value to style_file_name if necessary.  */
+extern void style_file_prepare (void);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _COLOR_H */