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Annotation of mandoc/man_argv.c, Revision 1.3

1.3     ! kristaps    1: /*     $Id: man_argv.c,v 1.2 2010/01/01 17:14:28 kristaps Exp $ */
1.1       kristaps    2: /*
                      3:  * Copyright (c) 2008, 2009 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 above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
1.2       kristaps   17: #ifdef HAVE_CONFIG_H
                     18: #include "config.h"
                     19: #endif
                     20:
1.1       kristaps   21: #include <sys/types.h>
                     22:
                     23: #include <assert.h>
                     24: #include <stdlib.h>
                     25: #include <string.h>
                     26:
1.3     ! kristaps   27: #include "mandoc.h"
1.1       kristaps   28: #include "libman.h"
                     29:
                     30:
                     31: int
                     32: man_args(struct man *m, int line, int *pos, char *buf, char **v)
                     33: {
                     34:
                     35:        assert(*pos);
                     36:        assert(' ' != buf[*pos]);
                     37:
                     38:        if (0 == buf[*pos])
                     39:                return(ARGS_EOLN);
                     40:
                     41:        *v = &buf[*pos];
                     42:
                     43:        /*
                     44:         * Process a quoted literal.  A quote begins with a double-quote
                     45:         * and ends with a double-quote NOT preceded by a double-quote.
                     46:         * Whitespace is NOT involved in literal termination.
                     47:         */
                     48:
                     49:        if ('\"' == buf[*pos]) {
                     50:                *v = &buf[++(*pos)];
                     51:
                     52:                for ( ; buf[*pos]; (*pos)++) {
                     53:                        if ('\"' != buf[*pos])
                     54:                                continue;
                     55:                        if ('\"' != buf[*pos + 1])
                     56:                                break;
                     57:                        (*pos)++;
                     58:                }
                     59:
                     60:                if (0 == buf[*pos]) {
1.3     ! kristaps   61:                        if ( ! man_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.1       kristaps   62:                                return(ARGS_ERROR);
                     63:                        return(ARGS_QWORD);
                     64:                }
                     65:
                     66:                buf[(*pos)++] = 0;
                     67:
                     68:                if (0 == buf[*pos])
                     69:                        return(ARGS_QWORD);
                     70:
                     71:                while (' ' == buf[*pos])
                     72:                        (*pos)++;
                     73:
                     74:                if (0 == buf[*pos])
1.3     ! kristaps   75:                        if ( ! man_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.1       kristaps   76:                                return(ARGS_ERROR);
                     77:
                     78:                return(ARGS_QWORD);
                     79:        }
                     80:
                     81:        /*
                     82:         * A non-quoted term progresses until either the end of line or
                     83:         * a non-escaped whitespace.
                     84:         */
                     85:
                     86:        for ( ; buf[*pos]; (*pos)++)
                     87:                if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
                     88:                        break;
                     89:
                     90:        if (0 == buf[*pos])
                     91:                return(ARGS_WORD);
                     92:
                     93:        buf[(*pos)++] = 0;
                     94:
                     95:        while (' ' == buf[*pos])
                     96:                (*pos)++;
                     97:
                     98:        if (0 == buf[*pos])
1.3     ! kristaps   99:                if ( ! man_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.1       kristaps  100:                        return(ARGS_ERROR);
                    101:
                    102:        return(ARGS_WORD);
                    103: }
                    104: