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/* lengths.c - commands that access TeX variables that contain TeX lengths
Copyright (C) 2001-2002 The Free Software Foundation
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
of the License, 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.
This file is available from http://sourceforge.net/projects/latex2rtf/
Authors:
2001-2002 Scott Prahl
By convention all the values stored should be twips 20 twips = 1 pt
*/
#include <stdlib.h>
#include <string.h>
#include "main.h"
#include "utils.h"
#include "lengths.h"
#include "parser.h"
#define MAX_LENGTHS 50
typedef struct {
char *name;
int distance;
} length_type;
length_type Lengths[MAX_LENGTHS];
static int iLengthCount = 0;
static int existsLength(char *s)
/**************************************************************************
purpose: checks to see if a named TeX dimension exists
returns: the array index of the named TeX dimension
**************************************************************************/
{
int i = 0;
while (i < iLengthCount && strstr(Lengths[i].name, s) == NULL)
i++;
if (i == iLengthCount)
return -1;
else
return i;
}
static void newLength(char *s, int d)
/**************************************************************************
purpose: allocates and initializes a named TeX dimension
**************************************************************************/
{
if (iLengthCount == MAX_LENGTHS) {
diagnostics(WARNING, "Too many lengths, ignoring %s", s);
return;
}
Lengths[iLengthCount].distance = d;
Lengths[iLengthCount].name = strdup(s);
if (Lengths[iLengthCount].name == NULL) {
diagnostics(ERROR, "Cannot allocate name for length \\%s", s);
}
iLengthCount++;
}
void setLength(char *s, int d)
/**************************************************************************
purpose: allocates (if necessary) and sets a named TeX dimension
**************************************************************************/
{
int i;
i = existsLength(s);
if (i < 0)
newLength(s, d);
else
Lengths[i].distance = d;
}
int getLength(char *s)
/**************************************************************************
purpose: retrieves a named TeX dimension
**************************************************************************/
{
int i;
i = existsLength(s);
if (i < 0) {
diagnostics(WARNING, "No length of type %s", s);
return 0;
}
return Lengths[i].distance;
}
void CmdSetTexLength(int code)
{
int d;
char c;
c = getNonSpace();
if (c == '=') /* optional '=' */
skipSpaces();
else
ungetTexChar(c);
d = getDimension();
diagnostics(4, "CmdSetTexLength size = %d", d);
switch (code) {
case SL_HOFFSET:
setLength("hoffset", d);
break;
case SL_VOFFSET:
setLength("voffset", d);
break;
case SL_PARINDENT:
setLength("parindent", d);
break;
case SL_PARSKIP:
setLength("parskip", d);
break;
case SL_BASELINESKIP:
setLength("baselineskip", d);
break;
case SL_TOPMARGIN:
setLength("topmargin", d);
break;
case SL_TEXTHEIGHT:
setLength("textheight", d);
break;
case SL_HEADHEIGHT:
setLength("headheight", d);
break;
case SL_HEADSEP:
setLength("headsep", d);
break;
case SL_TEXTWIDTH:
setLength("textwidth", d);
break;
case SL_ODDSIDEMARGIN:
setLength("oddsidemargin", d);
break;
case SL_EVENSIDEMARGIN:
setLength("evensidemargin", d);
break;
case SL_LINEWIDTH:
setLength("linewidth", d);
break;
}
}
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