1// Copyright 2014 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7#include "../../include/fxcrt/fx_ext.h"
8template <class T, class STR_T>
9T FXSYS_StrToInt(STR_T str)
10{
11    FX_BOOL neg = FALSE;
12    if (str == NULL) {
13        return 0;
14    }
15    if (*str == '-') {
16        neg = TRUE;
17        str ++;
18    }
19    T num = 0;
20    while (*str) {
21        if ((*str) < '0' || (*str) > '9') {
22            break;
23        }
24        num = num * 10 + (*str) - '0';
25        str ++;
26    }
27    return neg ? -num : num;
28}
29template <typename T, typename STR_T>
30STR_T FXSYS_IntToStr(T value, STR_T string, int radix)
31{
32    int i = 0;
33    if (value < 0) {
34        string[i++] = '-';
35        value = -value;
36    } else if (value == 0) {
37        string[0] = '0';
38        string[1] = 0;
39        return string;
40    }
41    int digits = 1;
42    T order = value / 10;
43    while(order > 0) {
44        digits++;
45        order = order / 10;
46    }
47    for (int d = digits - 1; d > -1; d--) {
48        string[d + i] = "0123456789abcdef"[value % 10];
49        value /= 10;
50    }
51    string[digits + i] = 0;
52    return string;
53}
54#ifdef __cplusplus
55extern "C" {
56#endif
57FX_INT32 FXSYS_atoi(FX_LPCSTR str)
58{
59    return FXSYS_StrToInt<FX_INT32, FX_LPCSTR>(str);
60}
61FX_INT32 FXSYS_wtoi(FX_LPCWSTR str)
62{
63    return FXSYS_StrToInt<FX_INT32, FX_LPCWSTR>(str);
64}
65FX_INT64 FXSYS_atoi64(FX_LPCSTR str)
66{
67    return FXSYS_StrToInt<FX_INT64, FX_LPCSTR>(str);
68}
69FX_INT64 FXSYS_wtoi64(FX_LPCWSTR str)
70{
71    return FXSYS_StrToInt<FX_INT64, FX_LPCWSTR>(str);
72}
73FX_LPCSTR FXSYS_i64toa(FX_INT64 value, FX_LPSTR str, int radix)
74{
75    return FXSYS_IntToStr<FX_INT64, FX_LPSTR>(value, str, radix);
76}
77FX_LPCWSTR FXSYS_i64tow(FX_INT64 value, FX_LPWSTR str, int radix)
78{
79    return FXSYS_IntToStr<FX_INT64, FX_LPWSTR>(value, str, radix);
80}
81#ifdef __cplusplus
82}
83#endif
84#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
85#ifdef __cplusplus
86extern "C" {
87#endif
88int FXSYS_GetACP()
89{
90    return 0;
91}
92FX_DWORD FXSYS_GetFullPathName(FX_LPCSTR filename, FX_DWORD buflen, FX_LPSTR buf, FX_LPSTR* filepart)
93{
94    int srclen = FXSYS_strlen(filename);
95    if (buf == NULL || (int)buflen < srclen + 1) {
96        return srclen + 1;
97    }
98    FXSYS_strcpy(buf, filename);
99    return srclen;
100}
101FX_DWORD FXSYS_GetModuleFileName(FX_LPVOID hModule, char* buf, FX_DWORD bufsize)
102{
103    return (FX_DWORD) - 1;
104}
105#ifdef __cplusplus
106}
107#endif
108#endif
109#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
110#ifdef __cplusplus
111extern "C" {
112#endif
113FXSYS_FILE* FXSYS_wfopen(FX_LPCWSTR filename, FX_LPCWSTR mode)
114{
115    return FXSYS_fopen(CFX_ByteString::FromUnicode(filename), CFX_ByteString::FromUnicode(mode));
116}
117char* FXSYS_strlwr(char* str)
118{
119    if (str == NULL) {
120        return NULL;
121    }
122    char* s = str;
123    while (*str) {
124        *str = FXSYS_tolower(*str);
125        str ++;
126    }
127    return s;
128}
129char* FXSYS_strupr(char* str)
130{
131    if (str == NULL) {
132        return NULL;
133    }
134    char* s = str;
135    while (*str) {
136        *str = FXSYS_toupper(*str);
137        str ++;
138    }
139    return s;
140}
141FX_WCHAR* FXSYS_wcslwr(FX_WCHAR* str)
142{
143    if (str == NULL) {
144        return NULL;
145    }
146    FX_WCHAR* s = str;
147    while (*str) {
148        *str = FXSYS_tolower(*str);
149        str ++;
150    }
151    return s;
152}
153FX_WCHAR* FXSYS_wcsupr(FX_WCHAR* str)
154{
155    if (str == NULL) {
156        return NULL;
157    }
158    FX_WCHAR* s = str;
159    while (*str) {
160        *str = FXSYS_toupper(*str);
161        str ++;
162    }
163    return s;
164}
165int FXSYS_stricmp(const char*dst, const char*src)
166{
167    int f, l;
168    do {
169        if ( ((f = (unsigned char)(*(dst++))) >= 'A') && (f <= 'Z') ) {
170            f -= ('A' - 'a');
171        }
172        if ( ((l = (unsigned char)(*(src++))) >= 'A') && (l <= 'Z') ) {
173            l -= ('A' - 'a');
174        }
175    } while ( f && (f == l) );
176    return(f - l);
177}
178int FXSYS_wcsicmp(const FX_WCHAR *dst, const FX_WCHAR *src)
179{
180    FX_WCHAR f, l;
181    do {
182        if ( ((f = (FX_WCHAR)(*(dst++))) >= 'A') && (f <= 'Z') ) {
183            f -= ('A' - 'a');
184        }
185        if ( ((l = (FX_WCHAR)(*(src++))) >= 'A') && (l <= 'Z') ) {
186            l -= ('A' - 'a');
187        }
188    } while ( f && (f == l) );
189    return(f - l);
190}
191char* FXSYS_itoa(int value, char* string, int radix)
192{
193    return FXSYS_IntToStr<FX_INT32, FX_LPSTR>(value, string, radix);
194}
195#ifdef __cplusplus
196}
197#endif
198#endif
199#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
200#ifdef __cplusplus
201extern "C" {
202#endif
203int FXSYS_WideCharToMultiByte(FX_DWORD codepage, FX_DWORD dwFlags, FX_LPCWSTR wstr, int wlen,
204                              FX_LPSTR buf, int buflen, FX_LPCSTR default_str, FX_BOOL* pUseDefault)
205{
206    int len = 0;
207    for (int i = 0; i < wlen; i ++) {
208        if (wstr[i] < 0x100) {
209            if (buf && len < buflen) {
210                buf[len] = (FX_CHAR)wstr[i];
211            }
212            len ++;
213        }
214    }
215    return len;
216}
217int FXSYS_MultiByteToWideChar(FX_DWORD codepage, FX_DWORD dwFlags, FX_LPCSTR bstr, int blen,
218                              FX_LPWSTR buf, int buflen)
219{
220    int wlen = 0;
221    for (int i = 0; i < blen; i ++) {
222        if (buf && wlen < buflen) {
223            buf[wlen] = bstr[i];
224        }
225        wlen ++;
226    }
227    return wlen;
228}
229#ifdef __cplusplus
230}
231#endif
232#endif
233