--- /dev/null
+/*
+** Copyright (C) 2001-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU Lesser General Public License as published by
+** the Free Software Foundation; either version 2.1 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "sfconfig.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include "sndfile.h"
+#include "common.h"
+
+#define STRINGS_DEBUG 0
+#if STRINGS_DEBUG
+static void hexdump (void *data, int len) ;
+#endif
+
+int
+psf_store_string (SF_PRIVATE *psf, int str_type, const char *str)
+{ char new_str [128] ;
+ size_t len_remaining, str_len ;
+ int k, str_flags ;
+
+ if (str == NULL)
+ return SFE_STR_BAD_STRING ;
+
+ str_len = strlen (str) ;
+
+ /* A few extra checks for write mode. */
+ if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+ { if ((psf->str_flags & SF_STR_ALLOW_START) == 0)
+ return SFE_STR_NO_SUPPORT ;
+ if (psf->have_written && (psf->str_flags & SF_STR_ALLOW_END) == 0)
+ return SFE_STR_NO_SUPPORT ;
+ /* Only allow zero length strings for software. */
+ if (str_type != SF_STR_SOFTWARE && str_len == 0)
+ return SFE_STR_BAD_STRING ;
+ } ;
+
+ /* Find the next free slot in table. */
+ for (k = 0 ; k < SF_MAX_STRINGS ; k++)
+ { /* If we find a matching entry clear it. */
+ if (psf->strings [k].type == str_type)
+ psf->strings [k].type = -1 ;
+
+ if (psf->strings [k].type == 0)
+ break ;
+ } ;
+
+ /* Determine flags */
+ str_flags = SF_STR_LOCATE_START ;
+ if (psf->file.mode == SFM_RDWR || psf->have_written)
+ { if ((psf->str_flags & SF_STR_ALLOW_END) == 0)
+ return SFE_STR_NO_ADD_END ;
+ str_flags = SF_STR_LOCATE_END ;
+ } ;
+
+ /* More sanity checking. */
+ if (k >= SF_MAX_STRINGS)
+ return SFE_STR_MAX_COUNT ;
+
+ if (k == 0 && psf->str_end != NULL)
+ { psf_log_printf (psf, "SFE_STR_WEIRD : k == 0 && psf->str_end != NULL\n") ;
+ return SFE_STR_WEIRD ;
+ } ;
+
+ if (k != 0 && psf->str_end == NULL)
+ { psf_log_printf (psf, "SFE_STR_WEIRD : k != 0 && psf->str_end == NULL\n") ;
+ return SFE_STR_WEIRD ;
+ } ;
+
+ /* Special case for the first string. */
+ if (k == 0)
+ psf->str_end = psf->str_storage ;
+
+ switch (str_type)
+ { case SF_STR_SOFTWARE :
+ /* In write mode, want to append libsndfile-version to string. */
+ if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+ { if (strstr (str, PACKAGE) == NULL)
+ { /*
+ ** If the supplied string does not already contain a
+ ** libsndfile-X.Y.Z component, then add it.
+ */
+ if (strlen (str) == 0)
+ snprintf (new_str, sizeof (new_str), "%s-%s", PACKAGE, VERSION) ;
+ else
+ snprintf (new_str, sizeof (new_str), "%s (%s-%s)", str, PACKAGE, VERSION) ;
+ }
+ else
+ snprintf (new_str, sizeof (new_str), "%s", str) ;
+
+ str = new_str ;
+ } ;
+ break ;
+
+ case SF_STR_TITLE :
+ case SF_STR_COPYRIGHT :
+ case SF_STR_ARTIST :
+ case SF_STR_COMMENT :
+ case SF_STR_DATE :
+ case SF_STR_ALBUM :
+ case SF_STR_LICENSE :
+ case SF_STR_TRACKNUMBER :
+ case SF_STR_GENRE :
+ break ;
+
+ default :
+ psf_log_printf (psf, "%s : SFE_STR_BAD_TYPE\n", __func__) ;
+ return SFE_STR_BAD_TYPE ;
+ } ;
+
+ str_len = strlen (str) ;
+
+ len_remaining = SIGNED_SIZEOF (psf->str_storage) - (psf->str_end - psf->str_storage) ;
+
+ if (len_remaining < str_len + 2)
+ return SFE_STR_MAX_DATA ;
+
+ psf->strings [k].type = str_type ;
+ psf->strings [k].str = psf->str_end ;
+ psf->strings [k].flags = str_flags ;
+
+ memcpy (psf->str_end, str, str_len + 1) ;
+ /* Plus one to catch string terminator. */
+ psf->str_end += str_len + 1 ;
+
+ psf->str_flags |= str_flags ;
+
+#if STRINGS_DEBUG
+ psf_log_printf (psf, "str_storage : %X\n", (int) psf->str_storage) ;
+ psf_log_printf (psf, "str_end : %X\n", (int) psf->str_end) ;
+ psf_log_printf (psf, "sizeof (str_storage) : %d\n", SIGNED_SIZEOF (psf->str_storage)) ;
+ psf_log_printf (psf, "used : %d\n", (int ) (psf->str_end - psf->str_storage)) ;
+ psf_log_printf (psf, "remaining : %d\n", SIGNED_SIZEOF (psf->str_storage) - (psf->str_end - psf->str_storage)) ;
+
+ hexdump (psf->str_storage, 300) ;
+#endif
+
+ return 0 ;
+} /* psf_store_string */
+
+int
+psf_set_string (SF_PRIVATE *psf, int str_type, const char *str)
+{ if (psf->file.mode == SFM_READ)
+ return SFE_STR_NOT_WRITE ;
+
+ return psf_store_string (psf, str_type, str) ;
+} /* psf_set_string */
+
+const char*
+psf_get_string (SF_PRIVATE *psf, int str_type)
+{ int k ;
+
+ for (k = 0 ; k < SF_MAX_STRINGS ; k++)
+ if (str_type == psf->strings [k].type)
+ return psf->strings [k].str ;
+
+ return NULL ;
+} /* psf_get_string */
+
+int
+psf_location_string_count (const SF_PRIVATE * psf, int location)
+{ int k, count = 0 ;
+
+ for (k = 0 ; k < SF_MAX_STRINGS ; k++)
+ if (psf->strings [k].type > 0 && psf->strings [k].flags & location)
+ count ++ ;
+
+ return count ;
+} /* psf_location_string_count */
+
+/*==============================================================================
+*/
+
+#if STRINGS_DEBUG
+
+#include <ctype.h>
+static void
+hexdump (void *data, int len)
+{ unsigned char *ptr ;
+ int k ;
+
+ ptr = data ;
+
+ puts ("---------------------------------------------------------") ;
+ while (len >= 16)
+ { for (k = 0 ; k < 16 ; k++)
+ printf ("%02X ", ptr [k] & 0xFF) ;
+ printf (" ") ;
+ for (k = 0 ; k < 16 ; k++)
+ printf ("%c", psf_isprint (ptr [k]) ? ptr [k] : '.') ;
+ puts ("") ;
+ ptr += 16 ;
+ len -= 16 ;
+ } ;
+} /* hexdump */
+
+#endif
projects / Faustine.git / blobdiff