cst_rel_io.c

/*************************************************************************/
/*                                                                       */
/*                  Language Technologies Institute                      */
/*                     Carnegie Mellon University                        */
/*                      Copyright (c) 1999-2000                          */
/*                        All Rights Reserved.                           */
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/*      permission.                                                      */
/*                                                                       */
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/*  DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING      */
/*  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT   */
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/*  THIS SOFTWARE.                                                       */
/*                                                                       */
/*************************************************************************/
/*             Author:  Alan W Black (awb@cs.cmu.edu)                    */
/*               Date:  September 2000                                   */
/*************************************************************************/
/*                                                                       */
/*  Relations i/o                                                        */
/*                                                                       */
/*************************************************************************/
#include "cst_file.h"
#include "cst_tokenstream.h"
#include "cst_item.h"
#include "cst_relation.h"
#include "cst_utterance.h"

int relation_load(cst_relation *r, const char *filename)
{
    cst_tokenstream *fd;
    cst_item *item;
    const char *token = 0;

    if ((fd = ts_open(filename, NULL, ";", "", "", 0)) == 0)
    {
        cst_errmsg("relation_load: can't open file \"%s\" for reading\n",
                   filename);
        return CST_ERROR_FORMAT;
    }

    for (; !ts_eof(fd);)
    {
        token = ts_get(fd);
        if (cst_streq("#", token))
            break;
    }
    if (!cst_streq("#", token))
    {
        cst_errmsg("relation_load: no end of header marker in \"%s\"\n",
                   filename);
        ts_close(fd);
        return CST_ERROR_FORMAT;
    }

    while (!ts_eof(fd))
    {
        token = ts_get(fd);
        if (cst_streq(token, ""))
            continue;
        item = relation_append(r, NULL);
        item_set_float(item, "end", (float) cst_atof(token));
        token = ts_get(fd);
        token = ts_get(fd);
        item_set_string(item, "name", token);
    }

    ts_close(fd);
    return CST_OK_FORMAT;
}

int relation_save(cst_relation *r, const char *filename)
{
    cst_file fd;
    cst_item *item;

    if (cst_streq(filename, "-"))
        fd = stdout;
    else

    if ((fd = cst_fopen(filename, CST_OPEN_WRITE)) == 0)
    {
        cst_errmsg("relation_save: can't open file \"%s\" for writing\n",
                   filename);
        return CST_ERROR_FORMAT;
    }

    for (item = relation_head(r); item; item = item_next(item))
    {
        if (item_feat_present(item, "end"))
            cst_fprintf(fd, "%f ", item_feat_float(item, "end"));
        else
            cst_fprintf(fd, "%f ", 0.00);
        if (item_feat_present(item, "name"))
            cst_fprintf(fd, "%s ", item_feat_string(item, "name"));
        else
            cst_fprintf(fd, "%s ", "_");
        cst_fprintf(fd, "\n");
    }
    if (fd != stdout)
        cst_fclose(fd);

    return CST_OK_FORMAT;
}