atf-c/detail/dynstr.c

4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews/* Copyright (c) 2008 The NetBSD Foundation, Inc.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * All rights reserved.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Redistribution and use in source and binary forms, with or without
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * modification, are permitted provided that the following conditions
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * are met:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * 1. Redistributions of source code must retain the above copyright
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *    notice, this list of conditions and the following disclaimer.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * 2. Redistributions in binary form must reproduce the above copyright
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *    notice, this list of conditions and the following disclaimer in the
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *    documentation and/or other materials provided with the distribution.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  */
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include "atf-c/detail/dynstr.h"
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <errno.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <stdarg.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <stdint.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <stdio.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <stdlib.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include <string.h>
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include "atf-c/detail/sanity.h"
4a53e3c2b83c476a93148eaee0272649beb221caMark Andrews#include "atf-c/detail/text.h"
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt#include "atf-c/error.h"
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/* ---------------------------------------------------------------------
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Auxiliary functions.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * --------------------------------------------------------------------- */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntresize(atf_dynstr_t *ad, size_t newsize)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    char *newdata;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    PRE(newsize > ad->m_datasize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    newdata = (char *)malloc(newsize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (newdata == NULL) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    } else {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        strcpy(newdata, ad->m_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        free(ad->m_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ad->m_data = newdata;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ad->m_datasize = newsize;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntstatic
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntprepend_or_append(atf_dynstr_t *ad, const char *fmt, va_list ap,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt                  bool prepend)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    char *aux;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    size_t newlen;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_list ap2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_copy(ap2, ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_text_format_ap(&aux, fmt, ap2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_end(ap2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (atf_is_error(err))
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    newlen = ad->m_length + strlen(aux);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (newlen + sizeof(char) > ad->m_datasize) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = resize(ad, newlen + sizeof(char));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if (atf_is_error(err))
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            goto out_free;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (prepend) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        memmove(ad->m_data + strlen(aux), ad->m_data, ad->m_length + 1);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        memcpy(ad->m_data, aux, strlen(aux));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    } else
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        strcpy(ad->m_data + ad->m_length, aux);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_length = newlen;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntout_free:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    free(aux);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntout:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/* ---------------------------------------------------------------------
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * The "atf_dynstr" type.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * --------------------------------------------------------------------- */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Constants.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntconst size_t atf_dynstr_npos = SIZE_MAX;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Constructors and destructors.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_init(atf_dynstr_t *ad)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data = (char *)malloc(sizeof(char));
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (ad->m_data == NULL) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data[0] = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_datasize = 1;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_length = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntout:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_init_ap(atf_dynstr_t *ad, const char *fmt, va_list ap)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_datasize = strlen(fmt) + 1;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_length = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    do {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        va_list ap2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        int ret;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ad->m_datasize *= 2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ad->m_data = (char *)malloc(ad->m_datasize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if (ad->m_data == NULL) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        va_copy(ap2, ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ret = vsnprintf(ad->m_data, ad->m_datasize, fmt, ap2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        va_end(ap2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if (ret < 0) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            free(ad->m_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            err = atf_libc_error(errno, "Cannot format string");
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        INV(ret >= 0);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        if ((size_t)ret >= ad->m_datasize) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            free(ad->m_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt            ad->m_data = NULL;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ad->m_length = ret;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    } while (ad->m_length >= ad->m_datasize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntout:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    POST(atf_is_error(err) || ad->m_data != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_init_fmt(atf_dynstr_t *ad, const char *fmt, ...)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_list ap;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_start(ap, fmt);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_dynstr_init_ap(ad, fmt, ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_end(ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_init_raw(atf_dynstr_t *ad, const void *mem, size_t memlen)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (memlen >= SIZE_MAX - 1) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data = (char *)malloc(memlen + 1);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (ad->m_data == NULL) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_datasize = memlen + 1;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    memcpy(ad->m_data, mem, memlen);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data[memlen] = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_length = strlen(ad->m_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    INV(ad->m_length <= memlen);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntout:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_init_rep(atf_dynstr_t *ad, size_t len, char ch)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (len == SIZE_MAX) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_datasize = (len + 1) * sizeof(char);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data = (char *)malloc(ad->m_datasize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (ad->m_data == NULL) {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        goto out;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    memset(ad->m_data, ch, len);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data[len] = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_length = len;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntout:
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_init_substr(atf_dynstr_t *ad, const atf_dynstr_t *src,
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt                       size_t beg, size_t end)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (beg > src->m_length)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        beg = src->m_length;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (end == atf_dynstr_npos || end > src->m_length)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        end = src->m_length;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return atf_dynstr_init_raw(ad, src->m_data + beg, end - beg);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_copy(atf_dynstr_t *dest, const atf_dynstr_t *src)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    dest->m_data = (char *)malloc(src->m_datasize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    if (dest->m_data == NULL)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_memory_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    else {
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        memcpy(dest->m_data, src->m_data, src->m_datasize);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        dest->m_datasize = src->m_datasize;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        dest->m_length = src->m_length;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        err = atf_no_error();
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    }
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntvoid
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_fini(atf_dynstr_t *ad)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    INV(ad->m_data != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    free(ad->m_data);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntchar *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_fini_disown(atf_dynstr_t *ad)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    INV(ad->m_data != NULL);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return ad->m_data;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Getters.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntconst char *
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_cstring(const atf_dynstr_t *ad)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return ad->m_data;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntsize_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_length(const atf_dynstr_t *ad)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return ad->m_length;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntsize_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_rfind_ch(const atf_dynstr_t *ad, char ch)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    size_t pos;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    for (pos = ad->m_length; pos > 0 && ad->m_data[pos - 1] != ch; pos--)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt        ;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return pos == 0 ? atf_dynstr_npos : pos - 1;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Modifiers.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_append_ap(atf_dynstr_t *ad, const char *fmt, va_list ap)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_list ap2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_copy(ap2, ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = prepend_or_append(ad, fmt, ap2, false);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_end(ap2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_append_fmt(atf_dynstr_t *ad, const char *fmt, ...)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_list ap;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_start(ap, fmt);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = prepend_or_append(ad, fmt, ap, false);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_end(ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntvoid
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_clear(atf_dynstr_t *ad)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_data[0] = '\0';
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    ad->m_length = 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_prepend_ap(atf_dynstr_t *ad, const char *fmt, va_list ap)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_list ap2;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_copy(ap2, ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = prepend_or_append(ad, fmt, ap2, true);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_end(ap2);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_error_t
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_dynstr_prepend_fmt(atf_dynstr_t *ad, const char *fmt, ...)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_list ap;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    atf_error_t err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_start(ap, fmt);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    err = prepend_or_append(ad, fmt, ap, true);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    va_end(ap);
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return err;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt/*
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt * Operators.
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt */
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntbool
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_equal_dynstr_cstring(const atf_dynstr_t *ad, const char *str)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return strcmp(ad->m_data, str) == 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntbool
ef421f66f47224a42073deaf087378c5d0c9952eEvan Huntatf_equal_dynstr_dynstr(const atf_dynstr_t *s1, const atf_dynstr_t *s2)
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt{
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt    return strcmp(s1->m_data, s2->m_data) == 0;
ef421f66f47224a42073deaf087378c5d0c9952eEvan Hunt}