206 lines
5.4 KiB
C
206 lines
5.4 KiB
C
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/*=============================================================================
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GNU UnRTF, a command-line program to convert RTF documents to other formats.
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Copyright (C) 2000,2001 Zachary Thayer Smith
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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 General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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The author is reachable by electronic mail at tuorfa@yahoo.com.
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=============================================================================*/
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/*----------------------------------------------------------------------
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* Module name: word
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* Author name: Zach Smith
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* Create date: 01 Sep 00
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* Purpose: Management of Word objects, which contain strings
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* as well as other Words.
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*----------------------------------------------------------------------
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* Changes:
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* 14 Oct 00, tuorfa@yahoo.com: fixed \fs bug (# is 2X the point size).
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* 14 Oct 00, tuorfa@yahoo.com: fixed table data printing.
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* 14 Oct 00, tuorfa@yahoo.com: protection against null entries in \info
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* 14 Oct 00, tuorfa@yahoo.com: fixed printing of <body> again
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* 14 Oct 00, tuorfa@yahoo.com: fixed closure of tables
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* 15 Oct 00, tuorfa@yahoo.com: fixed font attributes preceding <tr><td>
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* 15 Oct 00, tuorfa@yahoo.com: attributes now continue if >1 \cell in group
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* 15 Oct 00, tuorfa@yahoo.com: fixed font-size bug, lack of </head>
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* 7 Nov 00, tuorfa@yahoo.com: fixed \'## translatin bug
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* 8 Apr 01, tuorfa@yahoo.com: added check for out of memory after malloc
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* 21 Apr 01, tuorfa@yahoo.com: bug fixes regarding author, date
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* 21 Apr 01, tuorfa@yahoo.com: added paragraph alignment
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* 21 Apr 01, tuorfa@yahoo.com: fix for words getting lost after \par
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* 24 Jul 01, tuorfa@yahoo.com: moved conversion code to convert.c
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* 22 Sep 01, tuorfa@yahoo.com: moved word_dump to here from parse.c
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* 22 Sep 01, tuorfa@yahoo.com: added function-level comment blocks
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*--------------------------------------------------------------------*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include "defs.h"
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#include "parse.h"
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#include "malloc.h"
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#include "main.h"
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#include "error.h"
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#include "word.h"
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#include "hash.h"
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/* For word_dump */
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static int indent_level=0;
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/*========================================================================
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* Name: word_string
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* Purpose: Obtains the string of a Word object. This involves accessing
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* the Word hash.
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* Args: Word*.
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* Returns: String.
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*=======================================================================*/
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char *
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word_string (Word *w) {
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char *str;
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CHECK_PARAM_NOT_NULL(w);
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if (w->hash_index) str = hash_get_string (w->hash_index);
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else str = NULL;
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return str;
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}
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/*========================================================================
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* Name: word_new
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* Purpose: Instantiates a new Word object.
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* Args: String.
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* Returns: Word*.
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*=======================================================================*/
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Word *
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word_new (char *str) {
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Word * w;
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w = (Word *) my_malloc(sizeof(Word));
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if (!w)
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error_handler ("out of memory");
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memset ((void*) w, 0, sizeof(Word));
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if (!w) error_handler ("cannot allocate a Word");
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if (str) w->hash_index = hash_get_index (str);
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else w->hash_index = 0;
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return w;
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}
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/*========================================================================
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* Name: word_free
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* Purpose: Deallocates a Word object.
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* Args: Word.
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* Returns: None.
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*=======================================================================*/
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void word_free (Word *w) {
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Word *prev;
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Word *w2;
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CHECK_PARAM_NOT_NULL(w);
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while (w) {
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w2 = w->child;
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if (w2)
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word_free(w2);
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prev = w;
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w = w->next;
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my_free ((char*) prev);
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}
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}
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/*========================================================================
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* Name: print_indentation
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* Purpose: Prints padding for the word_dump routine.
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* Args: Identation level.
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* Returns: None.
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*=======================================================================*/
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static void
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print_indentation (int level)
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{
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int i;
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if (level) {
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for (i=0;i<level;i+=2)
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printf (". ");
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} else {
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printf ("\n-----------------------------------------------------------------------\n\n");
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}
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}
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/*========================================================================
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* Name: word_dump
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* Purpose: Recursive diagnostic routine to print out a tree of words.
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* Args: Word tree.
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* Returns: None.
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*=======================================================================*/
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void
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word_dump (Word *w)
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{
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char *s;
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CHECK_PARAM_NOT_NULL(w);
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printf ("\n");
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indent_level += 2;
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print_indentation (indent_level);
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while (w) {
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s = word_string (w);
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if (s) {
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printf ("\"%s\" ", s);
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} else {
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if (w->child) {
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word_dump (w->child);
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printf ("\n");
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print_indentation (indent_level);
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}
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else
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warning_handler ("Word object has no string and no children");
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}
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w = w->next;
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}
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indent_level -= 2;
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}
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