#1034 Added exiv2 config file support for lens recognition.
Robin Mills
9 years ago
parent
4a8e34bc44
commit
dbed6f857c
@ -0,0 +1,39 @@
|
||||
/*
|
||||
670 rmills@rmillsmbp:~/gnu/exiv2/trunk/samples $ gcc ../src/ini.cpp ini-test.cpp -lstdc++ -o ini-test
|
||||
671 rmills@rmillsmbp:~/gnu/exiv2/trunk/samples $ ./ini-test
|
||||
Config loaded from : 'initest.ini' version=6, name=Bob Smith, email=bob@smith.com, pi=3.14159, active=1
|
||||
169=Sigma 35mm F1.4 DG HSM ART, 170=UNDEFINED
|
||||
672 rmills@rmillsmbp:~/gnu/exiv2/trunk/samples $
|
||||
*/
|
||||
|
||||
|
||||
// Example that shows simple usage of the INIReader class
|
||||
|
||||
#include <iostream>
|
||||
#include "../src/ini_int.hpp"
|
||||
|
||||
int main()
|
||||
{
|
||||
int result = 0 ;
|
||||
const char* ini = "ini-test.ini";
|
||||
Exiv2::INIReader reader(ini);
|
||||
|
||||
if (reader.ParseError() < 0) {
|
||||
std::cerr << "Can't load '" << ini << "'" << std::endl ;
|
||||
result = 1;
|
||||
} else {
|
||||
std::cout << "Config loaded from : '" << ini << "' "
|
||||
<< "version=" << reader.GetInteger("protocol", "version", -1)
|
||||
<< ", name=" << reader.Get("user", "name", "UNKNOWN")
|
||||
<< ", email=" << reader.Get("user", "email", "UNKNOWN")
|
||||
<< ", pi=" << reader.GetReal("user", "pi", -1)
|
||||
<< ", active=" << reader.GetBoolean("user", "active", true)
|
||||
<< std::endl ;
|
||||
|
||||
std::cout << "169=" << reader.Get("canon", "169","UNDEFINED")
|
||||
<< ", 170=" << reader.Get("canon", "170","UNDEFINED")
|
||||
<< std::endl ;
|
||||
}
|
||||
|
||||
return result ;
|
||||
}
|
||||
@ -0,0 +1,14 @@
|
||||
; Test config file for samples/ini-test.cpp
|
||||
|
||||
[protocol] ; Protocol configuration
|
||||
version=6 ; IPv6
|
||||
|
||||
[user]
|
||||
name = Bob Smith ; Spaces around '=' are stripped
|
||||
email = bob@smith.com ; And comments (like this) ignored
|
||||
active = true ; Test a boolean
|
||||
pi = 3.14159 ; Test a floating point number
|
||||
|
||||
[canon]
|
||||
169=Sigma 35mm F1.4 DG HSM ART
|
||||
|
||||
@ -0,0 +1,277 @@
|
||||
// Read an INI file into easy-to-access name/value pairs.
|
||||
|
||||
// inih and INIReader are released under the New BSD license (see LICENSE.txt).
|
||||
// Go to the project home page for more info:
|
||||
//
|
||||
// https://github.com/benhoyt/inih
|
||||
|
||||
#include <algorithm>
|
||||
#include <cctype>
|
||||
#include <cstdlib>
|
||||
|
||||
#include "ini_int.hpp"
|
||||
|
||||
using std::string;
|
||||
using namespace Exiv2;
|
||||
|
||||
|
||||
/* inih -- simple .INI file parser
|
||||
|
||||
inih is released under the New BSD license (see LICENSE.txt). Go to the project
|
||||
home page for more info:
|
||||
|
||||
https://github.com/benhoyt/inih
|
||||
|
||||
*/
|
||||
|
||||
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
|
||||
#define _CRT_SECURE_NO_WARNINGS
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <ctype.h>
|
||||
#include <string.h>
|
||||
|
||||
#if !INI_USE_STACK
|
||||
#include <stdlib.h>
|
||||
#endif
|
||||
|
||||
#define MAX_SECTION 50
|
||||
#define MAX_NAME 50
|
||||
|
||||
/* Strip whitespace chars off end of given string, in place. Return s. */
|
||||
static char* rstrip(char* s)
|
||||
{
|
||||
char* p = s + strlen(s);
|
||||
while (p > s && isspace((unsigned char)(*--p)))
|
||||
*p = '\0';
|
||||
return s;
|
||||
}
|
||||
|
||||
/* Return pointer to first non-whitespace char in given string. */
|
||||
static char* lskip(const char* s)
|
||||
{
|
||||
while (*s && isspace((unsigned char)(*s)))
|
||||
s++;
|
||||
return (char*)s;
|
||||
}
|
||||
|
||||
/* Return pointer to first char (of chars) or inline comment in given string,
|
||||
or pointer to null at end of string if neither found. Inline comment must
|
||||
be prefixed by a whitespace character to register as a comment. */
|
||||
static char* find_chars_or_comment(const char* s, const char* chars)
|
||||
{
|
||||
#if INI_ALLOW_INLINE_COMMENTS
|
||||
int was_space = 0;
|
||||
while (*s && (!chars || !strchr(chars, *s)) &&
|
||||
!(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
|
||||
was_space = isspace((unsigned char)(*s));
|
||||
s++;
|
||||
}
|
||||
#else
|
||||
while (*s && (!chars || !strchr(chars, *s))) {
|
||||
s++;
|
||||
}
|
||||
#endif
|
||||
return (char*)s;
|
||||
}
|
||||
|
||||
/* Version of strncpy that ensures dest (size bytes) is null-terminated. */
|
||||
static char* strncpy0(char* dest, const char* src, size_t size)
|
||||
{
|
||||
strncpy(dest, src, size);
|
||||
dest[size - 1] = '\0';
|
||||
return dest;
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int Exiv2::ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
|
||||
void* user)
|
||||
{
|
||||
/* Uses a fair bit of stack (use heap instead if you need to) */
|
||||
#if INI_USE_STACK
|
||||
char line[INI_MAX_LINE];
|
||||
#else
|
||||
char* line;
|
||||
#endif
|
||||
char section[MAX_SECTION] = "";
|
||||
char prev_name[MAX_NAME] = "";
|
||||
|
||||
char* start;
|
||||
char* end;
|
||||
char* name;
|
||||
char* value;
|
||||
int lineno = 0;
|
||||
int error = 0;
|
||||
|
||||
#if !INI_USE_STACK
|
||||
line = (char*)malloc(INI_MAX_LINE);
|
||||
if (!line) {
|
||||
return -2;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Scan through stream line by line */
|
||||
while (reader(line, INI_MAX_LINE, stream) != NULL) {
|
||||
lineno++;
|
||||
|
||||
start = line;
|
||||
#if INI_ALLOW_BOM
|
||||
if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
|
||||
(unsigned char)start[1] == 0xBB &&
|
||||
(unsigned char)start[2] == 0xBF) {
|
||||
start += 3;
|
||||
}
|
||||
#endif
|
||||
start = lskip(rstrip(start));
|
||||
|
||||
if (*start == ';' || *start == '#') {
|
||||
/* Per Python configparser, allow both ; and # comments at the
|
||||
start of a line */
|
||||
}
|
||||
#if INI_ALLOW_MULTILINE
|
||||
else if (*prev_name && *start && start > line) {
|
||||
/* Non-blank line with leading whitespace, treat as continuation
|
||||
of previous name's value (as per Python configparser). */
|
||||
if (!handler(user, section, prev_name, start) && !error)
|
||||
error = lineno;
|
||||
}
|
||||
#endif
|
||||
else if (*start == '[') {
|
||||
/* A "[section]" line */
|
||||
end = find_chars_or_comment(start + 1, "]");
|
||||
if (*end == ']') {
|
||||
*end = '\0';
|
||||
strncpy0(section, start + 1, sizeof(section));
|
||||
*prev_name = '\0';
|
||||
}
|
||||
else if (!error) {
|
||||
/* No ']' found on section line */
|
||||
error = lineno;
|
||||
}
|
||||
}
|
||||
else if (*start) {
|
||||
/* Not a comment, must be a name[=:]value pair */
|
||||
end = find_chars_or_comment(start, "=:");
|
||||
if (*end == '=' || *end == ':') {
|
||||
*end = '\0';
|
||||
name = rstrip(start);
|
||||
value = lskip(end + 1);
|
||||
#if INI_ALLOW_INLINE_COMMENTS
|
||||
end = find_chars_or_comment(value, NULL);
|
||||
if (*end)
|
||||
*end = '\0';
|
||||
#endif
|
||||
rstrip(value);
|
||||
|
||||
/* Valid name[=:]value pair found, call handler */
|
||||
strncpy0(prev_name, name, sizeof(prev_name));
|
||||
if (!handler(user, section, name, value) && !error)
|
||||
error = lineno;
|
||||
}
|
||||
else if (!error) {
|
||||
/* No '=' or ':' found on name[=:]value line */
|
||||
error = lineno;
|
||||
}
|
||||
}
|
||||
|
||||
#if INI_STOP_ON_FIRST_ERROR
|
||||
if (error)
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if !INI_USE_STACK
|
||||
free(line);
|
||||
#endif
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int Exiv2::ini_parse_file(FILE* file, ini_handler handler, void* user)
|
||||
{
|
||||
return Exiv2::ini_parse_stream((ini_reader)fgets, file, handler, user);
|
||||
}
|
||||
|
||||
/* See documentation in header file. */
|
||||
int Exiv2::ini_parse(const char* filename, ini_handler handler, void* user)
|
||||
{
|
||||
FILE* file;
|
||||
int error;
|
||||
|
||||
file = fopen(filename, "r");
|
||||
if (!file)
|
||||
return -1;
|
||||
error = Exiv2::ini_parse_file(file, handler, user);
|
||||
fclose(file);
|
||||
return error;
|
||||
}
|
||||
|
||||
INIReader::INIReader(string filename)
|
||||
{
|
||||
_error = ini_parse(filename.c_str(), ValueHandler, this);
|
||||
}
|
||||
|
||||
int INIReader::ParseError()
|
||||
{
|
||||
return _error;
|
||||
}
|
||||
|
||||
string INIReader::Get(string section, string name, string default_value)
|
||||
{
|
||||
string key = MakeKey(section, name);
|
||||
return _values.count(key) ? _values[key] : default_value;
|
||||
}
|
||||
|
||||
long INIReader::GetInteger(string section, string name, long default_value)
|
||||
{
|
||||
string valstr = Get(section, name, "");
|
||||
const char* value = valstr.c_str();
|
||||
char* end;
|
||||
// This parses "1234" (decimal) and also "0x4D2" (hex)
|
||||
long n = strtol(value, &end, 0);
|
||||
return end > value ? n : default_value;
|
||||
}
|
||||
|
||||
double INIReader::GetReal(string section, string name, double default_value)
|
||||
{
|
||||
string valstr = Get(section, name, "");
|
||||
const char* value = valstr.c_str();
|
||||
char* end;
|
||||
double n = strtod(value, &end);
|
||||
return end > value ? n : default_value;
|
||||
}
|
||||
|
||||
bool INIReader::GetBoolean(string section, string name, bool default_value)
|
||||
{
|
||||
string valstr = Get(section, name, "");
|
||||
// Convert to lower case to make string comparisons case-insensitive
|
||||
std::transform(valstr.begin(), valstr.end(), valstr.begin(), ::tolower);
|
||||
if (valstr == "true" || valstr == "yes" || valstr == "on" || valstr == "1")
|
||||
return true;
|
||||
else if (valstr == "false" || valstr == "no" || valstr == "off" || valstr == "0")
|
||||
return false;
|
||||
else
|
||||
return default_value;
|
||||
}
|
||||
|
||||
string INIReader::MakeKey(string section, string name)
|
||||
{
|
||||
string key = section + "=" + name;
|
||||
// Convert to lower case to make section/name lookups case-insensitive
|
||||
std::transform(key.begin(), key.end(), key.begin(), ::tolower);
|
||||
return key;
|
||||
}
|
||||
|
||||
int INIReader::ValueHandler(void* user, const char* section, const char* name,
|
||||
const char* value)
|
||||
{
|
||||
INIReader* reader = (INIReader*)user;
|
||||
string key = MakeKey(section, name);
|
||||
if (reader->_values[key].size() > 0)
|
||||
reader->_values[key] += "\n";
|
||||
reader->_values[key] += value;
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -0,0 +1,152 @@
|
||||
// Read an INI file into easy-to-access name/value pairs.
|
||||
|
||||
// inih and INIReader are released under the New BSD license (see LICENSE.txt).
|
||||
// Go to the project home page for more info:
|
||||
//
|
||||
// https://github.com/benhoyt/inih
|
||||
|
||||
#ifndef __INIREADER_H__
|
||||
#define __INIREADER_H__
|
||||
|
||||
#include <map>
|
||||
#include <string>
|
||||
|
||||
namespace Exiv2 {
|
||||
|
||||
|
||||
/* inih -- simple .INI file parser
|
||||
|
||||
inih is released under the New BSD license (see LICENSE.txt). Go to the project
|
||||
home page for more info:
|
||||
|
||||
https://github.com/benhoyt/inih
|
||||
|
||||
*/
|
||||
|
||||
#ifndef __INI_H__
|
||||
#define __INI_H__
|
||||
|
||||
/* Make this header file easier to include in C++ code */
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
/* Typedef for prototype of handler function. */
|
||||
typedef int (*ini_handler)(void* user, const char* section,
|
||||
const char* name, const char* value);
|
||||
|
||||
/* Typedef for prototype of fgets-style reader function. */
|
||||
typedef char* (*ini_reader)(char* str, int num, void* stream);
|
||||
|
||||
/* Parse given INI-style file. May have [section]s, name=value pairs
|
||||
(whitespace stripped), and comments starting with ';' (semicolon). Section
|
||||
is "" if name=value pair parsed before any section heading. name:value
|
||||
pairs are also supported as a concession to Python's configparser.
|
||||
|
||||
For each name=value pair parsed, call handler function with given user
|
||||
pointer as well as section, name, and value (data only valid for duration
|
||||
of handler call). Handler should return nonzero on success, zero on error.
|
||||
|
||||
Returns 0 on success, line number of first error on parse error (doesn't
|
||||
stop on first error), -1 on file open error, or -2 on memory allocation
|
||||
error (only when INI_USE_STACK is zero).
|
||||
*/
|
||||
int ini_parse(const char* filename, ini_handler handler, void* user);
|
||||
|
||||
/* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
|
||||
close the file when it's finished -- the caller must do that. */
|
||||
int ini_parse_file(FILE* file, ini_handler handler, void* user);
|
||||
|
||||
/* Same as ini_parse(), but takes an ini_reader function pointer instead of
|
||||
filename. Used for implementing custom or string-based I/O. */
|
||||
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
|
||||
void* user);
|
||||
|
||||
/* Nonzero to allow multi-line value parsing, in the style of Python's
|
||||
configparser. If allowed, ini_parse() will call the handler with the same
|
||||
name for each subsequent line parsed. */
|
||||
#ifndef INI_ALLOW_MULTILINE
|
||||
#define INI_ALLOW_MULTILINE 1
|
||||
#endif
|
||||
|
||||
/* Nonzero to allow a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of
|
||||
the file. See http://code.google.com/p/inih/issues/detail?id=21 */
|
||||
#ifndef INI_ALLOW_BOM
|
||||
#define INI_ALLOW_BOM 1
|
||||
#endif
|
||||
|
||||
/* Nonzero to allow inline comments (with valid inline comment characters
|
||||
specified by INI_INLINE_COMMENT_PREFIXES). Set to 0 to turn off and match
|
||||
Python 3.2+ configparser behaviour. */
|
||||
#ifndef INI_ALLOW_INLINE_COMMENTS
|
||||
#define INI_ALLOW_INLINE_COMMENTS 1
|
||||
#endif
|
||||
#ifndef INI_INLINE_COMMENT_PREFIXES
|
||||
#define INI_INLINE_COMMENT_PREFIXES ";"
|
||||
#endif
|
||||
|
||||
/* Nonzero to use stack, zero to use heap (malloc/free). */
|
||||
#ifndef INI_USE_STACK
|
||||
#define INI_USE_STACK 1
|
||||
#endif
|
||||
|
||||
/* Stop parsing on first error (default is to keep parsing). */
|
||||
#ifndef INI_STOP_ON_FIRST_ERROR
|
||||
#define INI_STOP_ON_FIRST_ERROR 0
|
||||
#endif
|
||||
|
||||
/* Maximum line length for any line in INI file. */
|
||||
#ifndef INI_MAX_LINE
|
||||
#define INI_MAX_LINE 200
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __INI_H__ */
|
||||
|
||||
|
||||
// Read an INI file into easy-to-access name/value pairs. (Note that I've gone
|
||||
// for simplicity here rather than speed, but it should be pretty decent.)
|
||||
class INIReader
|
||||
{
|
||||
public:
|
||||
// Construct INIReader and parse given filename. See ini.h for more info
|
||||
// about the parsing.
|
||||
INIReader(std::string filename);
|
||||
|
||||
// Return the result of ini_parse(), i.e., 0 on success, line number of
|
||||
// first error on parse error, or -1 on file open error.
|
||||
int ParseError();
|
||||
|
||||
// Get a string value from INI file, returning default_value if not found.
|
||||
std::string Get(std::string section, std::string name,
|
||||
std::string default_value);
|
||||
|
||||
// Get an integer (long) value from INI file, returning default_value if
|
||||
// not found or not a valid integer (decimal "1234", "-1234", or hex "0x4d2").
|
||||
long GetInteger(std::string section, std::string name, long default_value);
|
||||
|
||||
// Get a real (floating point double) value from INI file, returning
|
||||
// default_value if not found or not a valid floating point value
|
||||
// according to strtod().
|
||||
double GetReal(std::string section, std::string name, double default_value);
|
||||
|
||||
// Get a boolean value from INI file, returning default_value if not found or if
|
||||
// not a valid true/false value. Valid true values are "true", "yes", "on", "1",
|
||||
// and valid false values are "false", "no", "off", "0" (not case sensitive).
|
||||
bool GetBoolean(std::string section, std::string name, bool default_value);
|
||||
|
||||
private:
|
||||
int _error;
|
||||
std::map<std::string, std::string> _values;
|
||||
static std::string MakeKey(std::string section, std::string name);
|
||||
static int ValueHandler(void* user, const char* section, const char* name,
|
||||
const char* value);
|
||||
};
|
||||
} // namespace Exiv2
|
||||
|
||||
#endif // __INIREADER_H__
|
||||
Loading…
Reference in New Issue