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Annotation of mandoc/man_argv.c, Revision 1.2

1.2     ! kristaps    1: /*     $Id: man_argv.c,v 1.1 2009/08/13 11:45:29 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:
                     27: #include "libman.h"
                     28:
                     29:
                     30: int
                     31: man_args(struct man *m, int line, int *pos, char *buf, char **v)
                     32: {
                     33:
                     34:        assert(*pos);
                     35:        assert(' ' != buf[*pos]);
                     36:
                     37:        if (0 == buf[*pos])
                     38:                return(ARGS_EOLN);
                     39:
                     40:        *v = &buf[*pos];
                     41:
                     42:        /*
                     43:         * Process a quoted literal.  A quote begins with a double-quote
                     44:         * and ends with a double-quote NOT preceded by a double-quote.
                     45:         * Whitespace is NOT involved in literal termination.
                     46:         */
                     47:
                     48:        if ('\"' == buf[*pos]) {
                     49:                *v = &buf[++(*pos)];
                     50:
                     51:                for ( ; buf[*pos]; (*pos)++) {
                     52:                        if ('\"' != buf[*pos])
                     53:                                continue;
                     54:                        if ('\"' != buf[*pos + 1])
                     55:                                break;
                     56:                        (*pos)++;
                     57:                }
                     58:
                     59:                if (0 == buf[*pos]) {
                     60:                        if ( ! man_pwarn(m, line, *pos, WTQUOTE))
                     61:                                return(ARGS_ERROR);
                     62:                        return(ARGS_QWORD);
                     63:                }
                     64:
                     65:                buf[(*pos)++] = 0;
                     66:
                     67:                if (0 == buf[*pos])
                     68:                        return(ARGS_QWORD);
                     69:
                     70:                while (' ' == buf[*pos])
                     71:                        (*pos)++;
                     72:
                     73:                if (0 == buf[*pos])
                     74:                        if ( ! man_pwarn(m, line, *pos, WTSPACE))
                     75:                                return(ARGS_ERROR);
                     76:
                     77:                return(ARGS_QWORD);
                     78:        }
                     79:
                     80:        /*
                     81:         * A non-quoted term progresses until either the end of line or
                     82:         * a non-escaped whitespace.
                     83:         */
                     84:
                     85:        for ( ; buf[*pos]; (*pos)++)
                     86:                if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
                     87:                        break;
                     88:
                     89:        if (0 == buf[*pos])
                     90:                return(ARGS_WORD);
                     91:
                     92:        buf[(*pos)++] = 0;
                     93:
                     94:        while (' ' == buf[*pos])
                     95:                (*pos)++;
                     96:
                     97:        if (0 == buf[*pos])
                     98:                if ( ! man_pwarn(m, line, *pos, WTSPACE))
                     99:                        return(ARGS_ERROR);
                    100:
                    101:        return(ARGS_WORD);
                    102: }
                    103: