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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.
*/
#ifndef _ANDROID_UTILS_MISC_H
#define _ANDROID_UTILS_MISC_H
#include <stdint.h>
/** TABULAR OUTPUT
**
** prints a list of strings in row/column format
**
**/
extern void print_tabular( const char** strings, int count,
const char* prefix, int width );
/** CHARACTER TRANSLATION
**
** converts one character into another in strings
**/
extern void buffer_translate_char( char* buff,
unsigned buffLen,
const char* src,
char fromChar,
char toChar );
extern void string_translate_char( char* str, char from, char to );
/** TEMP CHAR STRINGS
**
** implement a circular ring of temporary string buffers
**/
extern char* tempstr_get( int size );
extern char* tempstr_format( const char* fmt, ... );
/** 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 );
extern const char* quote_str( const char* str );
/** DECIMAL AND HEXADECIMAL CHARACTER SEQUENCES
**/
/* decodes a sequence of 'len' hexadecimal chars from 'hex' into
* an integer. returns -1 in case of error (i.e. badly formed chars)
*/
extern int hex2int( const uint8_t* hex, int len );
/* encodes an integer 'val' into 'len' hexadecimal charaters into 'hex' */
extern void int2hex( uint8_t* hex, int len, int val );
/** STRING PARAMETER PARSING
**/
/* A strict 'int' version of the 'strtol'.
* This routine is implemented on top of the standard 'strtol' for 32/64 bit
* portability.
*/
extern int strtoi(const char *nptr, char **endptr, int base);
/* Gets a parameter value out of the parameter string.
* Parameter format for this routine is as such:
* "<name1>=<value1> <name2>=<value2> ... <nameN>=<valueN>"
* I.e.:
* - Every parameter must have a name, and a value.
* - Name and value must be separated with '='.
* - No spaces are allowed around '=' separating name and value.
* - Parameters must be separated with a single ' ' character.
* - No '=' character is allowed in name and in value.
* Param:
* params - String, containing the parameters.
* name - Parameter name.
* value - Upon success contains value for the given parameter.
* val_size - Size of the 'value' string buffer.
* Return:
* 0 on success, -1 if requested parameter is not found, or (a positive) number
* of bytes, required to make a copy of the parameter's value if 'value' string
* was too small to contain it.
*/
extern int get_token_value(const char* params, const char* name, char* value, int val_size);
/* Gets a parameter value out of the parameter string.
* This routine is similar to get_token_value, except it will always allocate
* a string buffer for the value.
* Param:
* params - String, containing the parameters.
* name - Parameter name.
* value - Upon success contains an allocated string containint the value for
* the given parameter. The caller is responsible for freeing the buffer
* returned in this parameter on success.
* Return:
* 0 on success, -1 if requested parameter is not found, or -2 on
* memory failure.
*/
extern int get_token_value_alloc(const char* params, const char* name, char** value);
/* Gets an integer parameter value out of the parameter string.
* Param:
* params - String, containing the parameters. See comments to get_token_value
* routine on the parameters format.
* name - Parameter name. Parameter value must be a decimal number.
* value - Upon success contains integer value for the given parameter.
* Return:
* 0 on success, or -1 if requested parameter is not found, or -2 if parameter's
* format was bad (i.e. value was not a decimal number).
*/
extern int get_token_value_int(const char* params, const char* name, int* value);
#endif /* _ANDROID_UTILS_MISC_H */
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