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add libsndfile directory
git-svn-id: svn://localhost/ardour2/trunk@583 d708f5d6-7413-0410-9779-e7cbd77b26cf
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Paul Davis
parent
eac4dc101d
commit
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110 changed files with 67562 additions and 0 deletions
204
libs/libsndfile/src/strings.c
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204
libs/libsndfile/src/strings.c
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/*
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** Copyright (C) 2001-2004 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include "sndfile.h"
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#include "common.h"
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#define STRINGS_DEBUG 0
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#if STRINGS_DEBUG
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static void hexdump (void *data, int len) ;
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#endif
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int
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psf_store_string (SF_PRIVATE *psf, int str_type, const char *str)
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{ static char lsf_name [] = PACKAGE "-" VERSION ;
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static char bracket_name [] = " (" PACKAGE "-" VERSION ")" ;
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int k, str_len, len_remaining, str_flags ;
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if (str == NULL)
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return SFE_STR_BAD_STRING ;
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str_len = strlen (str) ;
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/* A few extra checks for write mode. */
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if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
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{ if ((psf->str_flags & SF_STR_ALLOW_START) == 0)
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return SFE_STR_NO_SUPPORT ;
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if ((psf->str_flags & SF_STR_ALLOW_END) == 0)
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return SFE_STR_NO_SUPPORT ;
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/* Only allow zero length strings for software. */
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if (str_type != SF_STR_SOFTWARE && str_len == 0)
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return SFE_STR_BAD_STRING ;
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} ;
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/* Determine flags */
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str_flags = SF_STR_LOCATE_START ;
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if (psf->have_written)
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{ if ((psf->str_flags & SF_STR_ALLOW_END) == 0)
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return SFE_STR_NO_ADD_END ;
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str_flags = SF_STR_LOCATE_END ;
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} ;
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/* Find next free slot in table. */
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for (k = 0 ; k < SF_MAX_STRINGS ; k++)
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if (psf->strings [k].type == 0)
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break ;
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/* More sanity checking. */
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if (k >= SF_MAX_STRINGS)
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return SFE_STR_MAX_COUNT ;
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if (k == 0 && psf->str_end != NULL)
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{ psf_log_printf (psf, "SFE_STR_WEIRD : k == 0 && psf->str_end != NULL\n") ;
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return SFE_STR_WEIRD ;
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} ;
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if (k != 0 && psf->str_end == NULL)
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{ psf_log_printf (psf, "SFE_STR_WEIRD : k != 0 && psf->str_end == NULL\n") ;
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return SFE_STR_WEIRD ;
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} ;
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/* Special case for the first string. */
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if (k == 0)
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psf->str_end = psf->str_storage ;
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#if STRINGS_DEBUG
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psf_log_printf (psf, "str_storage : %X\n", (int) psf->str_storage) ;
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psf_log_printf (psf, "str_end : %X\n", (int) psf->str_end) ;
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psf_log_printf (psf, "sizeof (str_storage) : %d\n", SIGNED_SIZEOF (psf->str_storage)) ;
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#endif
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len_remaining = SIGNED_SIZEOF (psf->str_storage) - (psf->str_end - psf->str_storage) ;
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if (len_remaining < str_len + 2)
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return SFE_STR_MAX_DATA ;
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switch (str_type)
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{ case SF_STR_SOFTWARE :
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/* In write mode, want to append libsndfile-version to string. */
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if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
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{ psf->strings [k].type = str_type ;
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psf->strings [k].str = psf->str_end ;
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psf->strings [k].flags = str_flags ;
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memcpy (psf->str_end, str, str_len + 1) ;
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psf->str_end += str_len ;
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/*
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** If the supplied string does not already contain a
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** libsndfile-X.Y.Z component, then add it.
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*/
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if (strstr (str, PACKAGE) == NULL && len_remaining > (int) (strlen (bracket_name) + str_len + 2))
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{ if (strlen (str) == 0)
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strncat (psf->str_end, lsf_name, len_remaining) ;
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else
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strncat (psf->str_end, bracket_name, len_remaining) ;
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psf->str_end += strlen (psf->str_end) ;
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} ;
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/* Plus one to catch string terminator. */
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psf->str_end += 1 ;
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break ;
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} ;
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/* Fall though if not write mode. */
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case SF_STR_TITLE :
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case SF_STR_COPYRIGHT :
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case SF_STR_ARTIST :
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case SF_STR_COMMENT :
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case SF_STR_DATE :
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psf->strings [k].type = str_type ;
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psf->strings [k].str = psf->str_end ;
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psf->strings [k].flags = str_flags ;
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/* Plus one to catch string terminator. */
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memcpy (psf->str_end, str, str_len + 1) ;
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psf->str_end += str_len + 1 ;
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break ;
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default :
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return SFE_STR_BAD_TYPE ;
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} ;
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psf->str_flags |= (psf->have_written) ? SF_STR_LOCATE_END : SF_STR_LOCATE_START ;
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#if STRINGS_DEBUG
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hexdump (psf->str_storage, 300) ;
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#endif
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return 0 ;
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} /* psf_store_string */
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int
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psf_set_string (SF_PRIVATE *psf, int str_type, const char *str)
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{ if (psf->mode == SFM_READ)
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return SFE_STR_NOT_WRITE ;
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return psf_store_string (psf, str_type, str) ;
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} /* psf_set_string */
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const char*
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psf_get_string (SF_PRIVATE *psf, int str_type)
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{ int k ;
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for (k = 0 ; k < SF_MAX_STRINGS ; k++)
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if (str_type == psf->strings [k].type)
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return psf->strings [k].str ;
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return NULL ;
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} /* psf_get_string */
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#if STRINGS_DEBUG
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#include <ctype.h>
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static void
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hexdump (void *data, int len)
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{ unsigned char *ptr ;
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int k ;
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ptr = data ;
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puts ("---------------------------------------------------------") ;
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while (len >= 16)
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{ for (k = 0 ; k < 16 ; k++)
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printf ("%02X ", ptr [k] & 0xFF) ;
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printf (" ") ;
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for (k = 0 ; k < 16 ; k++)
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printf ("%c", isprint (ptr [k]) ? ptr [k] : '.') ;
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puts ("") ;
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ptr += 16 ;
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len -= 16 ;
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} ;
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} /* hexdump */
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#endif
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/*
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** Do not edit or modify anything in this comment block.
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** The arch-tag line is a file identity tag for the GNU Arch
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** revision control system.
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**
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** arch-tag: 04393aa1-9389-46fe-baf2-58a7bd544fd6
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*/
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