Annotation of mandoc/macro.c, Revision 1.1
1.1 ! kristaps 1: /* $Id: roff.c,v 1.63 2008/12/10 16:03:12 kristaps Exp $ */
! 2: /*
! 3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
! 4: *
! 5: * Permission to use, copy, modify, and distribute this software for any
! 6: * purpose with or without fee is hereby granted, provided that the
! 7: * above copyright notice and this permission notice appear in all
! 8: * copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
! 11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
! 12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
! 13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
! 14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
! 15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
! 16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
! 17: * PERFORMANCE OF THIS SOFTWARE.
! 18: */
! 19: #include <stdlib.h>
! 20:
! 21: #include "roff.h"
! 22:
! 23: static int
! 24: macro_args_next(struct rofftree *tree, int *pos, char *buf, char **v)
! 25: {
! 26: int i;
! 27:
! 28: if (0 == buf[*pos])
! 29: return(0);
! 30:
! 31: if ('\"' == buf[*pos]) {
! 32: /* Syntax error: quotation marks not allowed. */
! 33: return(-1);
! 34: }
! 35:
! 36: *v = &buf[*pos];
! 37:
! 38: while (buf[*pos] && ! isspace(buf[*pos]))
! 39: (*pos)++;
! 40:
! 41: if (buf[*pos + 1] && '\\' == buf[*pos]) {
! 42: /* Syntax error: escaped whitespace not allowed. */
! 43: return(-1);
! 44: }
! 45:
! 46: buf[i] = 0;
! 47: return(1);
! 48: }
! 49:
! 50: /*
! 51: * Parses the following:
! 52: *
! 53: * .Xx foo bar baz ; foo "bar baz" ; ;
! 54: * ^---------- ^----------
! 55: */
! 56: static int
! 57: macro_fl(struct rofftree *tree, int tok, int *pos, char *buf)
! 58: {
! 59: int i, j, c, first;
! 60: char *args[ROFF_MAXLINEARG];
! 61:
! 62: first = *pos == 0;
! 63:
! 64: for (j = 0; ; ) {
! 65: i = *pos;
! 66: c = macro_args_next(tree, *i, buf, args[j]);
! 67: if (-1 == c)
! 68: return(0);
! 69: if (0 == c)
! 70: break;
! 71:
! 72: /* Break at the next command. */
! 73:
! 74: if (ROFF_MAX != (c = rofffindcallable(args[pos]))) {
! 75: if ( ! macro(tree, tok, argc, argv, i, p))
! 76: return(0);
! 77: if ( ! parse(tree, c, pos, args))
! 78: return(0);
! 79: break;
! 80: }
! 81:
! 82: /* Continue if we're just words. */
! 83:
! 84: if ( ! roffispunct(args[pos])) {
! 85: i++;
! 86: continue;
! 87: }
! 88:
! 89: /* Break if there's only remaining punctuation. */
! 90:
! 91: if (args[pos + 1] && roffispunct(args[pos + 1]))
! 92: break;
! 93:
! 94: /* If there are remaining words, start anew. */
! 95:
! 96: if ( ! macro(tree, tok, argc, argv, i, p))
! 97: return(0);
! 98:
! 99: /* Spit out the punctuation. */
! 100:
! 101: if ( ! word(tree, tok, *args++))
! 102: return(0);
! 103: i++;
! 104: }
! 105: }
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