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Viewing changes to src/xditview/page.c

  • Committer: Bazaar Package Importer
  • Author(s): Colin Watson
  • Date: 2002-03-17 04:11:50 UTC
  • Revision ID: james.westby@ubuntu.com-20020317041150-wkgfawjc3gxlk0o5
Tags: upstream-1.17.2
Import upstream version 1.17.2

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src/xditview/page.c
 
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/*
 
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 * page.c
 
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 *
 
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 * map page numbers to file position
 
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 */
 
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#include <X11/Xos.h>
 
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#include <X11/IntrinsicP.h>
 
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#include <X11/StringDefs.h>
 
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#include <stdio.h>
 
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#include <ctype.h>
 
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#include "DviP.h"
 
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#ifdef X_NOT_STDC_ENV
 
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extern long     ftell();
 
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#endif
 
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static DviFileMap *
 
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MapPageNumberToFileMap (dw, number)
 
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        DviWidget       dw;
 
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        int             number;
 
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{
 
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        DviFileMap      *m;
 
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        for (m = dw->dvi.file_map; m; m=m->next)
 
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                if (m->page_number == number)
 
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                        break;
 
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        return m;
 
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}
 
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DestroyFileMap (m)
 
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        DviFileMap      *m;
 
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{
 
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        DviFileMap      *next;
 
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        for (; m; m = next) {
 
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                next = m->next;
 
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                XtFree ((char *) m);
 
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        }
 
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}
 
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ForgetPagePositions (dw)
 
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        DviWidget       dw;
 
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{
 
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        DestroyFileMap (dw->dvi.file_map);
 
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        dw->dvi.file_map = 0;
 
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}
 
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RememberPagePosition(dw, number)
 
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        DviWidget       dw;
 
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        int             number;
 
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{
 
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        DviFileMap      *m;
 
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        if (!(m = MapPageNumberToFileMap (dw, number))) {
 
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                m = (DviFileMap *) XtMalloc (sizeof *m);
 
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                m->page_number = number;
 
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                m->next = dw->dvi.file_map;
 
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                dw->dvi.file_map = m;
 
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        }
 
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        if (dw->dvi.tmpFile)
 
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                m->position = ftell (dw->dvi.tmpFile);
 
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        else
 
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                m->position = ftell (dw->dvi.file);
 
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}
 
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SearchPagePosition (dw, number)
 
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        DviWidget       dw;
 
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        int             number;
 
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{
 
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        DviFileMap      *m;
 
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        if (!(m = MapPageNumberToFileMap (dw, number)))
 
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                return -1;
 
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        return m->position;
 
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}
 
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FileSeek(dw, position)
 
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DviWidget       dw;
 
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long            position;
 
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{
 
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        if (dw->dvi.tmpFile) {
 
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                dw->dvi.readingTmp = 1;
 
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                fseek (dw->dvi.tmpFile, position, 0);
 
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        } else
 
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                fseek (dw->dvi.file, position, 0);
 
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}
 
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