/* ----------------------------------------------------------------------------
   libconfig - A library for processing structured configuration files
   Copyright (C) 2005-2010  Mark A Lindner

   This file is part of libconfig.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public License
   as published by the Free Software Foundation; either version 2.1 of
   the License, or (at your option) any later version.

   This library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, see
   <http://www.gnu.org/licenses/>.
   ----------------------------------------------------------------------------
*/

#include "scanctx.h"
#include "wincompat.h"

#include <stddef.h>
#include <stdlib.h>
#include <string.h>

#define STRING_BLOCK_SIZE 64
#define CHUNK_SIZE 32

/* ------------------------------------------------------------------------- */

static const char *err_bad_include = "cannot open include file";
static const char *err_include_too_deep = "include file nesting too deep";

/* ------------------------------------------------------------------------- */

static const char *__scanctx_add_filename(struct scan_context *ctx,
                                          const char *filename)
{
  unsigned int count = ctx->num_filenames;
  const char **f;

  for(f = ctx->filenames; count > 0; ++f, --count)
  {
    if(!strcmp(*f, filename))
    {
      free((void *)filename);
      return(*f); /* already in list */
    }
  }

  if((ctx->num_filenames % CHUNK_SIZE) == 0)
  {
    ctx->filenames = (const char **)realloc(
      (void *)ctx->filenames,
      (ctx->num_filenames + CHUNK_SIZE) * sizeof(const char *));
  }

  ctx->filenames[ctx->num_filenames] = filename;
  ++ctx->num_filenames;
  return(filename);
}

/* ------------------------------------------------------------------------- */

void scanctx_init(struct scan_context *ctx, const char *top_filename)
{
  memset(ctx, 0, sizeof(struct scan_context));
  if(top_filename)
    ctx->top_filename = __scanctx_add_filename(ctx, strdup(top_filename));
}

/* ------------------------------------------------------------------------- */

const char **scanctx_cleanup(struct scan_context *ctx,
                             unsigned int *num_filenames)
{
  int i;

  for(i = 0; i < ctx->depth; ++i)
    fclose(ctx->streams[i]);

  free((void *)(strbuf_release(&(ctx->string))));

  *num_filenames = ctx->num_filenames;
  return(ctx->filenames);
}

/* ------------------------------------------------------------------------- */

FILE *scanctx_push_include(struct scan_context *ctx, void *buffer,
                           const char **error)
{
  FILE *fp = NULL;
  const char *file;
  char *full_file = NULL;

  *error = NULL;

  if(ctx->depth == MAX_INCLUDE_DEPTH)
  {
    *error = err_include_too_deep;
    return(NULL);
  }

  file = scanctx_take_string(ctx);
  if(ctx->config->include_dir)
  {
    full_file = (char *)malloc(strlen(ctx->config->include_dir) + strlen(file)
                               + 2);
    strcpy(full_file, ctx->config->include_dir);
    strcat(full_file, FILE_SEPARATOR);
    strcat(full_file, file);
  }

  fp = fopen(full_file ? full_file : file, "rt");
  free((void *)full_file);

  if(fp)
  {
    ctx->streams[ctx->depth] = fp;
    ctx->files[ctx->depth] = __scanctx_add_filename(ctx, file);
    ctx->buffers[ctx->depth] = buffer;
    ++(ctx->depth);
  }
  else
  {
    free((void *)file);
    *error = err_bad_include;
  }

  return(fp);
}

/* ------------------------------------------------------------------------- */

void *scanctx_pop_include(struct scan_context *ctx)
{
  void *buffer;

  if(ctx->depth == 0)
    return(NULL); /* stack underflow */

  --(ctx->depth);
  buffer = ctx->buffers[ctx->depth];
  fclose(ctx->streams[ctx->depth]);

  return(buffer);
}

/* ------------------------------------------------------------------------- */

char *scanctx_take_string(struct scan_context *ctx)
{
  char *r = strbuf_release(&(ctx->string));

  return(r ? r : strdup(""));
}

/* ------------------------------------------------------------------------- */

const char *scanctx_current_filename(struct scan_context *ctx)
{
  return((ctx->depth == 0) ? ctx->top_filename : ctx->files[ctx->depth - 1]);
}

/* ------------------------------------------------------------------------- */
/* eof */
* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="cm">/* $Id: rgb.h,v 1.1 2006/01/30 05:47:38 reinelt Exp $</span>
<span class="cm"> *</span>
<span class="cm"> * generic color handling</span>
<span class="cm"> *</span>
<span class="cm"> * Copyright (C) 2005 Michael Reinelt &lt;reinelt@eunet.at&gt;</span>
<span class="cm"> * Copyright (C) 2005 The LCD4Linux Team &lt;lcd4linux-devel@users.sourceforge.net&gt;</span>
<span class="cm"> *</span>
<span class="cm"> * This file is part of LCD4Linux.</span>
<span class="cm"> *</span>
<span class="cm"> * LCD4Linux is free software; you can redistribute it and/or modify</span>
<span class="cm"> * it under the terms of the GNU General Public License as published by</span>
<span class="cm"> * the Free Software Foundation; either version 2, or (at your option)</span>
<span class="cm"> * any later version.</span>
<span class="cm"> *</span>
<span class="cm"> * LCD4Linux is distributed in the hope that it will be useful,</span>
<span class="cm"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="cm"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<span class="cm"> * GNU General Public License for more details.</span>
<span class="cm"> *</span>
<span class="cm"> * You should have received a copy of the GNU General Public License</span>
<span class="cm"> * along with this program; if not, write to the Free Software</span>
<span class="cm"> * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<span class="cm"> *</span>
<span class="cm"> *</span>
<span class="cm"> * $Log: rgb.h,v $</span>
<span class="cm"> * Revision 1.1  2006/01/30 05:47:38  reinelt</span>
<span class="cm"> * graphic subsystem changed to full-color RGBA</span>
<span class="cm"> *</span>
<span class="cm"> */</span>


<span class="cp">#ifndef _RGB_H_</span>
<span class="cp">#define _RGB_H_</span>

<span class="k">typedef</span> <span class="k">struct</span> <span class="p">{</span>
    <span class="kt">unsigned</span> <span class="kt">char</span> <span class="n">R</span><span class="p">;</span>
    <span class="kt">unsigned</span> <span class="kt">char</span> <span class="n">G</span><span class="p">;</span>
    <span class="kt">unsigned</span> <span class="kt">char</span> <span class="n">B</span><span class="p">;</span>
    <span class="kt">unsigned</span> <span class="kt">char</span> <span class="n">A</span><span class="p">;</span>
<span class="p">}</span> <span class="n">RGBA</span><span class="p">;</span>


<span class="kt">int</span> <span class="nf">color2RGBA</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">color</span><span class="p">,</span> <span class="n">RGBA</span> <span class="o">*</span> <span class="n">C</span><span class="p">);</span>

<span class="cp">#endif</span>
</pre></div>