mirror of https://github.com/acanas/swad-core.git
556 lines
14 KiB
C
556 lines
14 KiB
C
// swad_HTML.c: tables, divs
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/*
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SWAD (Shared Workspace At a Distance),
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is a web platform developed at the University of Granada (Spain),
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and used to support university teaching.
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This file is part of SWAD core.
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Copyright (C) 1999-2019 Antonio Cañas Vargas
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*****************************************************************************/
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/********************************* Headers ***********************************/
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/*****************************************************************************/
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#define _GNU_SOURCE // For vasprintf
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#include <stdarg.h> // For va_start, va_end
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#include <stdio.h> // For fprintf, vasprintf
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#include <stdlib.h> // For free
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#include "swad_global.h"
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#include "swad_HTML.h"
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/*****************************************************************************/
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/************** External global variables from others modules ****************/
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/*****************************************************************************/
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extern struct Globals Gbl;
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/*****************************************************************************/
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/****************************** Public constants *****************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/***************************** Private constants *****************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/******************************* Private types *******************************/
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/*****************************************************************************/
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/*****************************************************************************/
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/***************************** Private vatiables *****************************/
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/*****************************************************************************/
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static unsigned HTM_TABLE_NestingLevel = 0;
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static unsigned HTM_TR_NestingLevel = 0;
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static unsigned HTM_TH_NestingLevel = 0;
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static unsigned HTM_TD_NestingLevel = 0;
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static unsigned HTM_DIV_NestingLevel = 0;
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/*****************************************************************************/
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/***************************** Private prototypes ****************************/
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/*****************************************************************************/
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static void HTM_TABLE_BeginWithoutAttr (void);
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static void HTM_TR_BeginWithoutAttr (void);
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static void HTM_TH_BeginWithoutAttr (void);
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static void HTM_TH_BeginAttr (const char *fmt,...);
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static void HTM_TD_BeginWithoutAttr (void);
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static void HTM_DIV_BeginWithoutAttr (void);
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/*****************************************************************************/
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/******************************* Start/end table *****************************/
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/*****************************************************************************/
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void HTM_TABLE_Begin (const char *fmt,...)
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{
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va_list ap;
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int NumBytesPrinted;
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char *Class;
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if (fmt)
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{
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if (fmt[0])
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{
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va_start (ap,fmt);
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NumBytesPrinted = vasprintf (&Class,fmt,ap);
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va_end (ap);
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if (NumBytesPrinted < 0) // If memory allocation wasn't possible,
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// or some other error occurs,
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// vasprintf will return -1
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Lay_NotEnoughMemoryExit ();
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/***** Print HTML *****/
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fprintf (Gbl.F.Out,"<table class=\"%s\">",Class);
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HTM_TABLE_NestingLevel++;
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free ((void *) Class);
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}
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else
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HTM_TABLE_BeginWithoutAttr ();
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}
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else
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HTM_TABLE_BeginWithoutAttr ();
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}
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void HTM_TABLE_BeginPadding (unsigned CellPadding)
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{
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if (CellPadding)
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{
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fprintf (Gbl.F.Out,"<table class=\"CELLS_PAD_%u\">",
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CellPadding); // CellPadding must be 0, 1, 2, 5 or 10
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HTM_TABLE_NestingLevel++;
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}
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else
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HTM_TABLE_BeginWithoutAttr ();
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}
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static void HTM_TABLE_BeginWithoutAttr (void)
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{
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fprintf (Gbl.F.Out,"<table>");
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HTM_TABLE_NestingLevel++;
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}
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void HTM_TABLE_BeginCenterPadding (unsigned CellPadding)
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{
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if (CellPadding)
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{
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fprintf (Gbl.F.Out,"<table class=\"FRAME_TBL_CENTER CELLS_PAD_%u\">",
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CellPadding); // CellPadding must be 0, 1, 2, 5 or 10
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HTM_TABLE_NestingLevel++;
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}
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else
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HTM_TABLE_BeginCenter ();
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}
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void HTM_TABLE_BeginCenter (void)
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{
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fprintf (Gbl.F.Out,"<table class=\"FRAME_TBL_CENTER\">");
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HTM_TABLE_NestingLevel++;
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}
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void HTM_TABLE_BeginWidePadding (unsigned CellPadding)
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{
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if (CellPadding)
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{
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fprintf (Gbl.F.Out,"<table class=\"FRAME_TBL_WIDE CELLS_PAD_%u\">",
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CellPadding); // CellPadding must be 0, 1, 2, 5 or 10
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HTM_TABLE_NestingLevel++;
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}
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else
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HTM_TABLE_BeginWide ();
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}
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void HTM_TABLE_BeginWide (void)
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{
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fprintf (Gbl.F.Out,"<table class=\"FRAME_TBL_WIDE\">");
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HTM_TABLE_NestingLevel++;
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}
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void HTM_TABLE_BeginWideMarginPadding (unsigned CellPadding)
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{
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if (CellPadding)
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{
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fprintf (Gbl.F.Out,"<table class=\"FRAME_TBL_WIDE_MARGIN CELLS_PAD_%u\">",
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CellPadding); // CellPadding must be 0, 1, 2, 5 or 10
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HTM_TABLE_NestingLevel++;
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}
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else
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HTM_TABLE_BeginWideMargin ();
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}
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void HTM_TABLE_BeginWideMargin (void)
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{
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fprintf (Gbl.F.Out,"<table class=\"FRAME_TBL_WIDE_MARGIN\">");
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HTM_TABLE_NestingLevel++;
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}
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void HTM_TABLE_End (void)
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{
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if (HTM_TABLE_NestingLevel == 0) // No TABLE open
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Ale_ShowAlert (Ale_ERROR,"Trying to close unopened TABLE.");
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fprintf (Gbl.F.Out,"</table>");
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HTM_TABLE_NestingLevel--;
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}
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/*****************************************************************************/
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/**************************** Start/end table row ****************************/
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/*****************************************************************************/
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void HTM_TR_Begin (const char *fmt,...)
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{
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va_list ap;
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int NumBytesPrinted;
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char *Attr;
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if (fmt)
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{
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if (fmt[0])
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{
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va_start (ap,fmt);
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NumBytesPrinted = vasprintf (&Attr,fmt,ap);
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va_end (ap);
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if (NumBytesPrinted < 0) // If memory allocation wasn't possible,
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// or some other error occurs,
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// vasprintf will return -1
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Lay_NotEnoughMemoryExit ();
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/***** Print HTML *****/
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fprintf (Gbl.F.Out,"<tr %s>",Attr);
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free ((void *) Attr);
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}
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else
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HTM_TR_BeginWithoutAttr ();
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}
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else
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HTM_TR_BeginWithoutAttr ();
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HTM_TR_NestingLevel++;
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}
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static void HTM_TR_BeginWithoutAttr (void)
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{
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fprintf (Gbl.F.Out,"<tr>");
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}
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void HTM_TR_End (void)
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{
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if (HTM_TR_NestingLevel == 0) // No TR open
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Ale_ShowAlert (Ale_ERROR,"Trying to close unopened TR.");
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fprintf (Gbl.F.Out,"</tr>");
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HTM_TR_NestingLevel--;
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}
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/*****************************************************************************/
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/***************************** Table heading cells ***************************/
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/*****************************************************************************/
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void HTM_TH (unsigned RowSpan,unsigned ColSpan,const char *Class,const char *Txt)
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{
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HTM_TH_Begin (RowSpan,ColSpan,Class);
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if (Txt)
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if (Txt[0])
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fprintf (Gbl.F.Out,"%s",Txt);
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HTM_TH_End ();
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}
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void HTM_TH_Begin (unsigned RowSpan,unsigned ColSpan,const char *Class)
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{
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if (RowSpan > 1 && ColSpan > 1)
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{
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if (Class)
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HTM_TH_BeginAttr ("rowspan=\"%u\" colspan=\"%u\" class=\"%s\"",
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RowSpan,ColSpan,Class);
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else
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HTM_TH_BeginAttr ("rowspan=\"%u\" colspan=\"%u\"",
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RowSpan,ColSpan);
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}
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else if (RowSpan > 1)
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{
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if (Class)
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HTM_TH_BeginAttr ("rowspan=\"%u\" class=\"%s\"",
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RowSpan,Class);
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else
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HTM_TH_BeginAttr ("rowspan=\"%u\"",
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RowSpan);
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}
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else if (ColSpan > 1)
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{
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if (Class)
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HTM_TH_BeginAttr ("colspan=\"%u\" class=\"%s\"",
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ColSpan,Class);
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else
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HTM_TH_BeginAttr ("colspan=\"%u\"",
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ColSpan);
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}
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else
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{
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if (Class)
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HTM_TH_BeginAttr ("class=\"%s\"",
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Class);
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else
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HTM_TH_BeginWithoutAttr ();
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}
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}
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static void HTM_TH_BeginAttr (const char *fmt,...)
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{
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va_list ap;
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int NumBytesPrinted;
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char *Attr;
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if (fmt)
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{
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if (fmt[0])
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{
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va_start (ap,fmt);
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NumBytesPrinted = vasprintf (&Attr,fmt,ap);
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va_end (ap);
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if (NumBytesPrinted < 0) // If memory allocation wasn't possible,
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// or some other error occurs,
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// vasprintf will return -1
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Lay_NotEnoughMemoryExit ();
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/***** Print HTML *****/
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fprintf (Gbl.F.Out,"<th %s>",Attr);
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free ((void *) Attr);
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}
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else
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HTM_TH_BeginWithoutAttr ();
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}
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else
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HTM_TH_BeginWithoutAttr ();
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HTM_TH_NestingLevel++;
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}
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static void HTM_TH_BeginWithoutAttr (void)
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{
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fprintf (Gbl.F.Out,"<th>");
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}
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void HTM_TH_End (void)
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{
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if (HTM_TH_NestingLevel == 0) // No TH open
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Ale_ShowAlert (Ale_ERROR,"Trying to close unopened TR.");
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fprintf (Gbl.F.Out,"</th>");
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HTM_TH_NestingLevel--;
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}
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void HTM_TH_Empty (unsigned NumColumns)
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{
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unsigned NumCol;
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for (NumCol = 0;
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NumCol < NumColumns;
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NumCol++)
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{
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HTM_TH_BeginAttr (NULL);
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HTM_TH_End ();
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}
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}
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/*****************************************************************************/
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/********************************* Table cells *******************************/
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/*****************************************************************************/
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void HTM_TD_Begin (const char *fmt,...)
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{
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va_list ap;
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int NumBytesPrinted;
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char *Attr;
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if (fmt)
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{
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if (fmt[0])
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{
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va_start (ap,fmt);
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NumBytesPrinted = vasprintf (&Attr,fmt,ap);
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va_end (ap);
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if (NumBytesPrinted < 0) // If memory allocation wasn't possible,
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// or some other error occurs,
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// vasprintf will return -1
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Lay_NotEnoughMemoryExit ();
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/***** Print HTML *****/
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fprintf (Gbl.F.Out,"<td %s>",Attr);
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free ((void *) Attr);
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}
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else
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HTM_TD_BeginWithoutAttr ();
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}
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else
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HTM_TD_BeginWithoutAttr ();
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HTM_TD_NestingLevel++;
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}
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static void HTM_TD_BeginWithoutAttr (void)
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{
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fprintf (Gbl.F.Out,"<td>");
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}
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void HTM_TD_End (void)
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{
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if (HTM_TD_NestingLevel == 0) // No TH open
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Ale_ShowAlert (Ale_ERROR,"Trying to close unopened TD.");
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fprintf (Gbl.F.Out,"</td>");
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HTM_TD_NestingLevel--;
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}
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void HTM_TD_Empty (unsigned NumColumns)
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{
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unsigned NumCol;
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for (NumCol = 0;
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NumCol < NumColumns;
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NumCol++)
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{
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HTM_TD_Begin (NULL);
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HTM_TD_End ();
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}
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}
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void HTM_TD_ColouredEmpty (unsigned NumColumns)
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{
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unsigned NumCol;
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for (NumCol = 0;
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NumCol < NumColumns;
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NumCol++)
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{
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HTM_TD_Begin ("class=\"COLOR%u\"",Gbl.RowEvenOdd);
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HTM_TD_End ();
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}
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}
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/*****************************************************************************/
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/************************************ Divs ***********************************/
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/*****************************************************************************/
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void HTM_DIV_Begin (const char *fmt,...)
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{
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va_list ap;
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int NumBytesPrinted;
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char *Attr;
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if (fmt)
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{
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if (fmt[0])
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{
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va_start (ap,fmt);
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NumBytesPrinted = vasprintf (&Attr,fmt,ap);
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va_end (ap);
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if (NumBytesPrinted < 0) // If memory allocation wasn't possible,
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// or some other error occurs,
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// vasprintf will return -1
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Lay_NotEnoughMemoryExit ();
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/***** Print HTML *****/
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fprintf (Gbl.F.Out,"<div %s>",Attr);
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free ((void *) Attr);
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}
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else
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HTM_DIV_BeginWithoutAttr ();
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}
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else
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HTM_DIV_BeginWithoutAttr ();
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HTM_DIV_NestingLevel++;
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}
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static void HTM_DIV_BeginWithoutAttr (void)
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{
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fprintf (Gbl.F.Out,"<div>");
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}
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void HTM_DIV_End (void)
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{
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if (HTM_DIV_NestingLevel == 0) // No TH open
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Ale_ShowAlert (Ale_ERROR,"Trying to close unopened DIV.");
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fprintf (Gbl.F.Out,"</div>");
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HTM_TD_NestingLevel--;
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}
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/*****************************************************************************/
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/******************************** Main zone **********************************/
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/*****************************************************************************/
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void HTM_MAIN_Begin (const char *Class)
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{
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fprintf (Gbl.F.Out,"<main class=\"%s\">",Class);
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}
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void HTM_MAIN_End (void)
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{
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fprintf (Gbl.F.Out,"</main>");
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}
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/*****************************************************************************/
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/********************************* Articles **********************************/
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/*****************************************************************************/
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void HTM_ARTICLE_Begin (const char *ArticleId)
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{
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fprintf (Gbl.F.Out,"<article id=\"%s\">",ArticleId);
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}
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void HTM_ARTICLE_End (void)
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{
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fprintf (Gbl.F.Out,"</article>");
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}
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/*****************************************************************************/
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/********************************* Sections **********************************/
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/*****************************************************************************/
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void HTM_SECTION_Begin (const char *SectionId)
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{
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fprintf (Gbl.F.Out,"<section id=\"%s\">",SectionId);
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}
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void HTM_SECTION_End (void)
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{
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fprintf (Gbl.F.Out,"</section>");
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}
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/*****************************************************************************/
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/****************************** Unordered lists ******************************/
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/*****************************************************************************/
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/*
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void HTM_UL_Begin (const char *SectionId)
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{
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fprintf (Gbl.F.Out,"<ul id=\"%s\">",SectionId);
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}
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*/
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void HTM_UL_End (void)
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{
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fprintf (Gbl.F.Out,"</ul>");
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}
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