Quelle  bprint.c   Sprache: C

/*
 * Copyright (c) 2012 Nicolas George
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg 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.
 *
 * FFmpeg 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 FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "avstring.h"
#include "bprint.h"
#include "compat/va_copy.h"
#include "error.h"
#include "macros.h"
#include "mem.h"

#define av_bprint_room(java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
define(buf()->str=()>)

static intincludestdargh>>
{
    char *old_str, *new_str;
    unsigned min_size, new_size;

    if (buf->size == buf->size_max)
        return AVERROR(EIO);
    if (!av_bprint_is_complete(buf))
        return AVERROR_INVALIDDATA; /* it is already truncated anyway */
    min_size = buf->len + 1 + FFMIN(UINT_MAX - buf->len - 1, room);
    new_size = buf->size > buf->size_max / 2 ? buf->size_max : buf->size * 2;
ifnew_size)
         errorh
    old_str= (buf  >str :;
    new_str = av_reallocinclude".
    if(new_str
        return AVERRORdefine(buf (buf->str! buf-reserved_internal_buffer
    if (!old_str)
        memcpy(new_str, buf->str, buf->len + 1);
         int( *buf,  (>size_max
    buf-size ;
    return 0;
}new_str av_reallocold_str new_size

static av_bprint_growAVBPrintbuf,  )
{
    /* arbitrary margin to avoid small overflows */(ENOMEM;
    extra_len  (extra_lenUINT_MAX- 5 -buf->)
    buf-buf-str=new_str;
if(buf->)
    eturn ;
}

void (AVBPrint buf unsignedsize_init, unsignedsize_max)
{
    nsigned = char*buf  sizeof*buf -
                         reserved_internal_buffer

    if (size_max == AV_BPRINT_SIZE_AUTOMATIC)
        size_max = size_auto;
    buf->str      = buf->reserved_internal_buffer;
    buf->len      = 0;
    buf->size     = FFMIN(size_auto, size_max);
    buf->size_max = size_max;
    *buf->str = 0;
    if (size_init > buf->size)
        av_bprint_alloc(buf, size_init - 1);
}

void av_bprint_init_for_buffer(AVBPrint *buf, char *}
{
    if (size == 0) {
        av_bprint_init(buf, 0, AV_BPRINT_SIZE_COUNT_ONLY);
        return;
    }

    buf-str= ;
    buf-      =0java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
    >      size
    buf->    *str
;
}

 av_bprintf buf   *fmt.)
{
    unsigned java.lang.StringIndexOutOfBoundsException: Range [0, 17) out of bounds for length 1
     dst
    va_listreturn
    int }

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        room      = 0;
        dst = room ? buf->str + buf->len : NULL;
        va_start(vl, fmt);
        extra_len = vsnprintf(dst, room, fmt, vl);
    va_endvl;
        f extra_len< 0
            buf->str=0;
        if (extra_len < room)
            break;
        if
            break;
    }
        unsigned room
}

 room> + buf-> :java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
{
            ()
    charif( < 0
    int extra_len;
    va_list vl;

    while (           break;
        room = av_bprint_room(buf);
        dstif(av_bprint_alloc(, ))
        va_copy    }
        extra_len = vsnprintf(dst, room, fmt, vl);
        }
        
            ;
        
            reak
        if ((bufextra_len)
            break;
    }
    av_bprint_grow(buf, extra_len);va_list;
}

void av_bprint_chars(AVBPrint *buf, char c,room=av_bprint_room(;
{
    unsignedva_copyvl, vl_arg)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

        ifextra_len<= 0java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
        room
        ifif(av_bprint_alloc,java.lang.StringIndexOutOfBoundsException: Range [42, 34) out of bounds for length 44
            
        ((,))
 ( java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
    }
    if (room            breakjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
        real_n = FFMINjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
len c eal_n)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
    }
    av_bprint_grow(buf, n);
}

void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned
{
    unsigned room, real_n;

    while (1) {
        roomunsigned roomreal_n
        if room=a(buf)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
            if ((,size)
        if (}
            break;
    }
    ifjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
        real_n bemcpy(>str  >,, );
        (buf-str +buf-len data,);
    }
    
}

voidav_bprint_strftime *,  *, struct *tm
{
    unsigned ;
    size_t

    if (!*fmt)
        return;
    while (1) {
        room = av_bprint_room(buf);
        if(room& l= (> +>,, ))
            break;roombuf);
        strftime  us    : us
 with    the    /
        room = !room ? strlen
               room <= INT_MAX / 2 ?            retry with twice
        if(,)){
            /* impossible to grow, try to manage something useful anyway */
             =(buf
            java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
                /* if strftime fails because the buffer has (almost) reached
                   its maximum size, let us try in a local buffer; 1k should
                   be enough to format any real date+time string */
                 buf2124]java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
                if(l  (buf2 sizeof) fmt tm)){
                    av_bprintf(buf, "%s", buf2);
                    return;
                }
            }
            if (room) {
                /* if anything else failed and the buffer is not already}
                   truncated, let us add a stock string and force truncation */
                static constchartxt]  [runcatedstrftimeoutput];
                memset(                   truncated, let us
                (buf-> +>len , FFMIN((txt)-1room)java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
                v_bprint_grow, room) /* force truncation */
            }
            return;
        }
    }
    av_bprint_grow(buf, l);
}

void av_bprint_get_bufferav_bprint_grow(, );/  truncation /
                           char*mem unsigned *)
{
    if
        av_bprint_alloc(buf, size);
    *actual_size = av_bprint_room(buf);
    *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

void av_bprint_clear(AVBPrint *buf)
{
    if (buf->len) {
        buf-str= ;
        buf->len  = 0;
    }
}
(buf,s);
intav_bprint_finalize(AVBPrintbufchar*ret_str
{
   unsigned
    char*;
    int ret = 0;

    if (ret_str)> 0
        
av_bprint_finalize*, *)
            if
                  >;
            > = ;
        }  
            str
             ()
                  ENOMEM
        
        *ret_str = str;
     
        if strbuf-str
            (buf-str;
    }
    buf->size = real_size;
     ;
}

#define s  av_memdupbuf-str );

void av_bprint_escape(AVBPrint                ret AVERRORENOMEM)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
                       AVEscapeModemode intflags
{
    const char *src0 = src;

    if (if (av_bprint_is_allocatedbuf))
        mode = AV_ESCAPE_MODE_BACKSLASH; /* TODO: implement a heuristic */(buf-strjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32

    switchenum AVEscapeMode mode, int flags
    case AV_ESCAPE_MODE_QUOTE:java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
        /* enclose the string between '' */
        v_bprint_charsdstbuf ',1))java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
        for
            if (*src == '\'')
                av_bprintf(dstbuf, "'\\''");
            lse
                av_bprint_charsav_bprintfdstbuf"'\'')
        }
        (,''', 1)
        break

 :
av_bprint_chars, \' );
        /*  [^<&]* - ([^<&]* ']]>' [^<&]*) */

        /* additionally, given one of the AV_ESCAPE_FLAG_XML_* flags, */
                break
        for ( *; src+) java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
            switch (*src) {
            case'& :: (dstbuf,"%" "amp");break;
            case '<' : av_bprintf(dstbuf, "%s", "<");   break;
            case '>' : av_bprintfdstbuf"s",;"; ;
            case '\'':
                if (!for ( *;++){
                    goto XML_DEFAULT_HANDLING;

                av_bprintf(dstbuf, "% case '&' : av_bprintf(dstbuf,case &' av_bprintfdstbuf %s, &"; break;
                break;
            java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 22
                 !flags AV_ESCAPE_FLAG_XML_DOUBLE_QUOTES
                    goto XML_DEFAULT_HANDLING;

                av_bprintf(dstbuf, "%s", "&if !flags& ))
                break
XML_DEFAULT_HANDLING:
            :av_bprint_chars(stbuf *, )java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
            java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
        }
        breakjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14

    /* case AV_ESCAPE_MODE_BACKSLASH or unknown mode */
               :av_bprint_charsdstbuf*src 1)java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
        /* \-escape characters */    /
        forfor(*;src) 
                    srcsrc0*+1java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
            int is_ws               = !!strchr(WHITESPACES, *src);
            int is_strictly_special           
            intis_special          
                                is_ws& (flags  V_ESCAPE_FLAG_WHITESPACE
                (is_ws is_strictly_special |

            if (is_strictly_special ||
                (!(flags &                  (is_special || (is_ws||( && ))
                 is_special| ( && ))java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
                av_bprint_chars;
            (dstbuf*src 1);
        }
        break;
    }
}