html.c
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/*
* "Software G3270, desenvolvido com base nos códigos fontes do WC3270 e X3270
* (Paul Mattes Paul.Mattes@usa.net), de emulação de terminal 3270 para acesso a
* aplicativos mainframe. Registro no INPI sob o nome G3270.
*
* Copyright (C) <2008> <Banco do Brasil S.A.>
*
* Este programa é software livre. Você pode redistribuí-lo e/ou modificá-lo sob
* os termos da GPL v.2 - Licença Pública Geral GNU, conforme publicado pela
* Free Software Foundation.
*
* Este programa é distribuído na expectativa de ser útil, mas SEM QUALQUER
* GARANTIA; sem mesmo a garantia implícita de COMERCIALIZAÇÃO ou de ADEQUAÇÃO
* A QUALQUER PROPÓSITO EM PARTICULAR. Consulte a Licença Pública Geral GNU para
* obter mais detalhes.
*
* Você deve ter recebido uma cópia da Licença Pública Geral GNU junto com este
* programa; se não, escreva para a Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA, 02111-1307, USA
*
* Este programa está nomeado como html.c e possui - linhas de código.
*
* Contatos:
*
* perry.werneck@gmail.com (Alexandre Perry de Souza Werneck)
*
*/
#include <string.h>
#include <lib3270.h>
#include <lib3270/session.h>
#include <lib3270/html.h>
#include "globals.h"
#include "utilc.h"
struct chr_xlat
{
unsigned char chr;
const char * xlat;
};
/*--[ Defines ]--------------------------------------------------------------------------------------*/
enum html_element
{
HTML_ELEMENT_LINE_BREAK,
HTML_ELEMENT_BEGIN_COLOR,
HTML_ELEMENT_END_COLOR,
HTML_ELEMENT_HEADER,
HTML_ELEMENT_FOOTER,
HTML_ELEMENT_COUNT
};
static const char * element_text[HTML_ELEMENT_COUNT] =
{
#ifdef DEBUG
"<br />\n",
#else
"<br />",
#endif // Debug
"<span style=\"color:%s;background-color:%s\">",
"</span>",
"<!DOCTYPE html><html><head><meta http-equiv=\"content-type\" content=\"text/html;charset=%s\"/></head><body style=\"font-family:courier;background-color:%s\">",
"</body></html>"
};
static const char * html_color[] =
{
"black",
"deepSkyBlue",
"red",
"pink",
"green",
"turquoise",
"yellow",
"white",
"black",
"blue",
"orange",
"purple",
"paleGreen",
"paleTurquoise",
"grey",
"white"
};
struct html_info
{
int szText;
char * text;
unsigned short fg;
unsigned short bg;
};
/*--[ Implement ]------------------------------------------------------------------------------------*/
static void append_string(struct html_info *info, const char *text)
{
int sz = strlen(info->text)+strlen(text);
if(strlen(info->text)+sz <= info->szText)
{
info->szText += (100+sz);
info->text = lib3270_realloc(info->text,info->szText);
}
strcat(info->text,text);
}
static void append_element(struct html_info *info, enum html_element id)
{
append_string(info,element_text[id]);
}
static update_colors(struct html_info *info, unsigned short attr)
{
unsigned short fg;
unsigned short bg = ((attr & 0x00F0) >> 4);
char * txt;
#warning Fix field colors
if(attr & LIB3270_ATTR_FIELD)
fg = (attr & 0x0003);
else
fg = (attr & 0x000F);
if(fg == info->fg && bg == info->bg)
return;
if(info->fg != 0xFF)
append_string(info,element_text[HTML_ELEMENT_END_COLOR]);
txt = xs_buffer(element_text[HTML_ELEMENT_BEGIN_COLOR],html_color[fg],html_color[bg]);
append_string(info,txt);
lib3270_free(txt);
info->fg = fg;
info->bg = bg;
}
static const append_char(struct html_info *info, const struct chr_xlat *xlat, unsigned char chr)
{
char txt[] = { chr, 0 };
int f;
for(f=0;xlat[f].chr;f++)
{
if(xlat[f].chr == chr)
{
append_string(info,xlat[f].xlat);
return;
}
}
append_string(info,txt);
}
LIB3270_EXPORT char * lib3270_get_as_html(H3270 *session, LIB3270_HTML_OPTION option)
{
int row, baddr;
struct html_info info;
memset(&info,0,sizeof(info));
info.szText = session->rows * (session->cols + strlen(element_text[HTML_ELEMENT_LINE_BREAK])+1);
info.text = lib3270_malloc(info.szText+1);
info.fg = 0xFF;
info.bg = 0xFF;
if(option & LIB3270_HTML_OPTION_HEADERS)
{
char *txt = xs_buffer(element_text[HTML_ELEMENT_HEADER],lib3270_get_charset(session),html_color[0]);
append_string(&info,txt);
lib3270_free(txt);
}
baddr = 0;
for(row=0;row < session->rows;row++)
{
int cr = 0;
int len = 0;
int col;
for(col = 0; col < session->cols;col++)
{
if( session->text[baddr+col].chr != ' ' || (session->text[baddr+col].attr & LIB3270_ATTR_CG))
len = col;
}
for(col = 0; col <= len;col++)
{
if((option && LIB3270_HTML_OPTION_ALL) || (session->text[baddr+col].attr & LIB3270_ATTR_SELECTED))
{
cr++;
update_colors(&info,session->text[baddr+col].attr);
if(session->text[baddr+col].attr & LIB3270_ATTR_CG)
{
static const struct chr_xlat xlat[] =
{
{ 0xd3, "+" }, // CG 0xab, plus
{ 0xa2, "-" }, // CG 0x92, horizontal line
{ 0x85, "|" }, // CG 0x184, vertical line
{ 0xd4, "+" }, // CG 0xac, LR corner
{ 0xd5, "+" }, // CG 0xad, UR corner
{ 0xc5, "+" }, // CG 0xa4, UL corner
{ 0xc4, "+" }, // CG 0xa3, LL corner
{ 0xc6, "|" }, // CG 0xa5, left tee
{ 0xd6, "|" }, // CG 0xae, right tee
{ 0xc7, "-" }, // CG 0xa6, bottom tee
{ 0xd7, "-" }, // CG 0xaf, top tee
{ 0x8c, "≤" }, // CG 0xf7, less or equal "≤"
{ 0xae, "≥" }, // CG 0xd9, greater or equal "≥"
{ 0xbe, "≠" }, // CG 0x3e, not equal "≠"
{ 0xad, "[" }, // "["
{ 0xbd, "]" }, // "]"
{ 0x00, NULL }
};
append_char(&info, xlat, session->text[baddr+col].chr);
}
else
{
static const struct chr_xlat xlat[] =
{
{ '"', """ },
{ '&', "&" },
{ '<', "<" },
{ '>', ">" },
{ ' ', " " },
{ 0x00, NULL }
};
append_char(&info, xlat, session->text[baddr+col].chr);
}
}
}
baddr += session->cols;
if(cr || (option && LIB3270_HTML_OPTION_ALL))
append_element(&info,HTML_ELEMENT_LINE_BREAK);
}
if(info.fg != 0xFF)
append_string(&info,element_text[HTML_ELEMENT_END_COLOR]);
if(option & LIB3270_HTML_OPTION_HEADERS)
append_element(&info,HTML_ELEMENT_FOOTER);
return lib3270_realloc(info.text,strlen(info.text)+2);
}