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/* Copyright (C) 2007-2008 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** 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 General Public License for more details.
*/
#include "android/utils/misc.h"
#include "android/utils/stralloc.h"
#include "android/utils/debug.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
extern void
print_tabular( const char** strings, int count,
const char* prefix, int width )
{
int nrows, ncols, r, c, n, maxw = 0;
for (n = 0; n < count; n++) {
int len = strlen(strings[n]);
if (len > maxw)
maxw = len;
}
maxw += 2;
ncols = width/maxw;
nrows = (count + ncols-1)/ncols;
for (r = 0; r < nrows; r++) {
printf( "%s", prefix );
for (c = 0; c < ncols; c++) {
int index = c*nrows + r;
if (index >= count) {
break;
}
printf( "%-*s", maxw, strings[index] );
}
printf( "\n" );
}
}
extern void
string_translate_char( char* str, char from, char to )
{
char* p = str;
while (p != NULL && (p = strchr(p, from)) != NULL)
*p++ = to;
}
extern void
buffer_translate_char( char* buff,
unsigned buffLen,
const char* src,
char fromChar,
char toChar )
{
int len = strlen(src);
if (len >= buffLen)
len = buffLen-1;
memcpy(buff, src, len);
buff[len] = 0;
string_translate_char( buff, fromChar, toChar );
}
/** TEMP CHAR STRINGS
**
** implement a circular ring of temporary string buffers
**/
typedef struct Temptring {
struct TempString* next;
char* buffer;
int size;
} TempString;
#define MAX_TEMP_STRINGS 16
static TempString _temp_strings[ MAX_TEMP_STRINGS ];
static int _temp_string_n;
extern char*
tempstr_get( int size )
{
TempString* t = &_temp_strings[_temp_string_n];
if ( ++_temp_string_n >= MAX_TEMP_STRINGS )
_temp_string_n = 0;
size += 1; /* reserve 1 char for terminating zero */
if (t->size < size) {
t->buffer = realloc( t->buffer, size );
if (t->buffer == NULL) {
derror( "%s: could not allocate %d bytes",
__FUNCTION__, size );
exit(1);
}
t->size = size;
}
return t->buffer;
}
extern char*
tempstr_format( const char* fmt, ... )
{
va_list args;
char* result;
STRALLOC_DEFINE(s);
va_start(args, fmt);
stralloc_formatv(s, fmt, args);
va_end(args);
result = stralloc_to_tempstr(s);
stralloc_reset(s);
return result;
}
/** QUOTING
**
** dumps a human-readable version of a string. this replaces
** newlines with \n, etc...
**/
extern const char*
quote_bytes( const char* str, int len )
{
STRALLOC_DEFINE(s);
char* q;
stralloc_add_quote_bytes( s, str, len );
q = stralloc_to_tempstr( s );
stralloc_reset(s);
return q;
}
extern const char*
quote_str( const char* str )
{
int len = strlen(str);
return quote_bytes( str, len );
}
/** HEXADECIMAL CHARACTER SEQUENCES
**/
static int
hexdigit( int c )
{
unsigned d;
d = (unsigned)(c - '0');
if (d < 10) return d;
d = (unsigned)(c - 'a');
if (d < 6) return d+10;
d = (unsigned)(c - 'A');
if (d < 6) return d+10;
return -1;
}
int
hex2int( const uint8_t* hex, int len )
{
int result = 0;
while (len > 0) {
int c = hexdigit(*hex++);
if (c < 0)
return -1;
result = (result << 4) | c;
len --;
}
return result;
}
void
int2hex( uint8_t* hex, int len, int val )
{
static const uint8_t hexchars[16] = "0123456789abcdef";
while ( --len >= 0 )
*hex++ = hexchars[(val >> (len*4)) & 15];
}
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