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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 1999-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: toolutil.c
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 1999nov19
* created by: Markus W. Scherer
*
* 6/25/08 - Added Cygwin specific code in uprv_mkdir - Brian Rower
*
* This file contains utility functions for ICU tools like genccode.
*/
#include "unicode/platform.h"
#if U_PLATFORM == U_PF_MINGW
// *cough* - for struct stat
#ifdef __STRICT_ANSI__
#undef __STRICT_ANSI__
#endif
#endif
#include <stdio.h>
#include <sys/stat.h>
#include <fstream>
#include <time.h>
#include "unicode/utypes.h"
#ifndef U_TOOLUTIL_IMPLEMENTATION
#error U_TOOLUTIL_IMPLEMENTATION not set - must be set for all ICU source files in common/ - see https://unicode-org.github.io/icu/userguide/howtouseicu
#endif
#if U_PLATFORM_USES_ONLY_WIN32_API
# define VC_EXTRALEAN
# define WIN32_LEAN_AND_MEAN
# define NOUSER
# define NOSERVICE
# define NOIME
# define NOMCX
# if U_PLATFORM == U_PF_MINGW
# define __NO_MINGW_LFS /* gets around missing 'off64_t' */
# endif
# include <windows.h>
# include <direct.h>
#else
# include <sys/stat.h>
# include <sys/types.h>
#endif
/* In MinGW environment, io.h needs to be included for _mkdir() */
#if U_PLATFORM == U_PF_MINGW
#include <io.h>
#endif
#include <errno.h>
#include <cstddef>
#include "unicode/errorcode.h"
#include "unicode/putil.h"
#include "cmemory.h"
#include "cstring.h"
#include "toolutil.h"
U_NAMESPACE_BEGIN
IcuToolErrorCode::~IcuToolErrorCode() {
// Safe because our handleFailure() does not throw exceptions.
if(isFailure()) { handleFailure(); }
}
void IcuToolErrorCode::handleFailure() const {
fprintf(stderr, "error at %s: %s\n", location, errorName());
exit(errorCode);
}
U_NAMESPACE_END
static int32_t currentYear = -1;
U_CAPI int32_t U_EXPORT2 getCurrentYear() {
if(currentYear == -1) {
time_t now = time(nullptr);
tm *fields = gmtime(&now);
currentYear = 1900 + fields->tm_year;
}
return currentYear;
}
U_CAPI const char * U_EXPORT2
getLongPathname(const char *pathname) {
#if U_PLATFORM_USES_ONLY_WIN32_API
/* anticipate problems with "short" pathnames */
static WIN32_FIND_DATAA info;
HANDLE file=FindFirstFileA(pathname, &info);
if(file!=INVALID_HANDLE_VALUE) {
if(info.cAlternateFileName[0]!=0) {
/* this file has a short name, get and use the long one */
const char *basename=findBasename(pathname);
if(basename!=pathname) {
/* prepend the long filename with the original path */
uprv_memmove(info.cFileName+(basename-pathname), info.cFileName, uprv_strlen(info.cFileName)+1);
uprv_memcpy(info.cFileName, pathname, basename-pathname);
}
pathname=info.cFileName;
}
FindClose(file);
}
#endif
return pathname;
}
U_CAPI const char * U_EXPORT2
findDirname(const char *path, char *buffer, int32_t bufLen, UErrorCode* status) {
if(U_FAILURE(*status)) return NULL;
const char *resultPtr = NULL;
int32_t resultLen = 0;
const char *basename=uprv_strrchr(path, U_FILE_SEP_CHAR);
#if U_FILE_ALT_SEP_CHAR!=U_FILE_SEP_CHAR
const char *basenameAlt=uprv_strrchr(path, U_FILE_ALT_SEP_CHAR);
if(basenameAlt && (!basename || basename<basenameAlt)) {
basename = basenameAlt;
}
#endif
if(!basename) {
/* no basename - return ''. */
resultPtr = "";
resultLen = 0;
} else {
resultPtr = path;
resultLen = static_cast<int32_t>(basename - path);
if(resultLen<1) {
resultLen = 1; /* '/' or '/a' -> '/' */
}
}
if((resultLen+1) <= bufLen) {
uprv_strncpy(buffer, resultPtr, resultLen);
buffer[resultLen]=0;
return buffer;
} else {
*status = U_BUFFER_OVERFLOW_ERROR;
return NULL;
}
}
U_CAPI const char * U_EXPORT2
findBasename(const char *filename) {
const char *basename=uprv_strrchr(filename, U_FILE_SEP_CHAR);
#if U_FILE_ALT_SEP_CHAR!=U_FILE_SEP_CHAR
//be lenient about pathname separators on Windows, like official implementation of C++17 std::filesystem in MSVC
//would be convenient to merge this loop with the one above, but alas, there is no such solution in the standard library
const char *alt_basename=uprv_strrchr(filename, U_FILE_ALT_SEP_CHAR);
if(alt_basename>basename) {
basename=alt_basename;
}
#endif
if(basename!=NULL) {
return basename+1;
} else {
return filename;
}
}
U_CAPI void U_EXPORT2
uprv_mkdir(const char *pathname, UErrorCode *status) {
int retVal = 0;
#if U_PLATFORM_USES_ONLY_WIN32_API
retVal = _mkdir(pathname);
#else
retVal = mkdir(pathname, S_IRWXU | (S_IROTH | S_IXOTH) | (S_IROTH | S_IXOTH));
#endif
if (retVal && errno != EEXIST) {
#if U_PF_MINGW <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
/*if using Cygwin and the mkdir says it failed...check if the directory already exists..*/
/* if it does...don't give the error, if it does not...give the error - Brian Rower - 6/25/08 */
struct stat st;
if(stat(pathname,&st) != 0)
{
*status = U_FILE_ACCESS_ERROR;
}
#else
*status = U_FILE_ACCESS_ERROR;
#endif
}
}
#if !UCONFIG_NO_FILE_IO
U_CAPI UBool U_EXPORT2
uprv_fileExists(const char *file) {
struct stat stat_buf;
if (stat(file, &stat_buf) == 0) {
return TRUE;
} else {
return FALSE;
}
}
#endif
U_CAPI int32_t U_EXPORT2
uprv_compareGoldenFiles(
const char* buffer, int32_t bufferLen,
const char* goldenFilePath,
bool overwrite) {
if (overwrite) {
std::ofstream ofs;
ofs.open(goldenFilePath);
ofs.write(buffer, bufferLen);
ofs.close();
return -1;
}
std::ifstream ifs(goldenFilePath, std::ifstream::in);
int32_t pos = 0;
char c;
while (ifs.get(c) && pos < bufferLen) {
if (c != buffer[pos]) {
// Files differ at this position
break;
}
pos++;
}
if (pos == bufferLen && ifs.eof()) {
// Files are same lengths
pos = -1;
}
ifs.close();
return pos;
}
/*U_CAPI UDate U_EXPORT2
uprv_getModificationDate(const char *pathname, UErrorCode *status)
{
if(U_FAILURE(*status)) {
return;
}
// TODO: handle case where stat is not available
struct stat st;
if(stat(pathname,&st) != 0)
{
*status = U_FILE_ACCESS_ERROR;
} else {
return st.st_mtime;
}
}
*/
/* tool memory helper ------------------------------------------------------- */
struct UToolMemory {
char name[64];
int32_t capacity, maxCapacity, size, idx;
void *array;
alignas(std::max_align_t) char staticArray[1];
};
U_CAPI UToolMemory * U_EXPORT2
utm_open(const char *name, int32_t initialCapacity, int32_t maxCapacity, int32_t size) {
UToolMemory *mem;
if(maxCapacity<initialCapacity) {
maxCapacity=initialCapacity;
}
mem=(UToolMemory *)uprv_malloc(sizeof(UToolMemory)+initialCapacity*size);
if(mem==NULL) {
fprintf(stderr, "error: %s - out of memory\n", name);
exit(U_MEMORY_ALLOCATION_ERROR);
}
mem->array=mem->staticArray;
uprv_strcpy(mem->name, name);
mem->capacity=initialCapacity;
mem->maxCapacity=maxCapacity;
mem->size=size;
mem->idx=0;
return mem;
}
U_CAPI void U_EXPORT2
utm_close(UToolMemory *mem) {
if(mem!=NULL) {
if(mem->array!=mem->staticArray) {
uprv_free(mem->array);
}
uprv_free(mem);
}
}
U_CAPI void * U_EXPORT2
utm_getStart(UToolMemory *mem) {
return (char *)mem->array;
}
U_CAPI int32_t U_EXPORT2
utm_countItems(UToolMemory *mem) {
return mem->idx;
}
static UBool
utm_hasCapacity(UToolMemory *mem, int32_t capacity) {
if(mem->capacity<capacity) {
int32_t newCapacity;
if(mem->maxCapacity<capacity) {
fprintf(stderr, "error: %s - trying to use more than maxCapacity=%ld units\n",
mem->name, (long)mem->maxCapacity);
exit(U_MEMORY_ALLOCATION_ERROR);
}
/* try to allocate a larger array */
if(capacity>=2*mem->capacity) {
newCapacity=capacity;
} else if(mem->capacity<=mem->maxCapacity/3) {
newCapacity=2*mem->capacity;
} else {
newCapacity=mem->maxCapacity;
}
if(mem->array==mem->staticArray) {
mem->array=uprv_malloc(newCapacity*mem->size);
if(mem->array!=NULL) {
uprv_memcpy(mem->array, mem->staticArray, (size_t)mem->idx*mem->size);
}
} else {
mem->array=uprv_realloc(mem->array, newCapacity*mem->size);
}
if(mem->array==NULL) {
fprintf(stderr, "error: %s - out of memory\n", mem->name);
exit(U_MEMORY_ALLOCATION_ERROR);
}
mem->capacity=newCapacity;
}
return TRUE;
}
U_CAPI void * U_EXPORT2
utm_alloc(UToolMemory *mem) {
char *p=NULL;
int32_t oldIndex=mem->idx;
int32_t newIndex=oldIndex+1;
if(utm_hasCapacity(mem, newIndex)) {
p=(char *)mem->array+oldIndex*mem->size;
mem->idx=newIndex;
uprv_memset(p, 0, mem->size);
}
return p;
}
U_CAPI void * U_EXPORT2
utm_allocN(UToolMemory *mem, int32_t n) {
char *p=NULL;
int32_t oldIndex=mem->idx;
int32_t newIndex=oldIndex+n;
if(utm_hasCapacity(mem, newIndex)) {
p=(char *)mem->array+oldIndex*mem->size;
mem->idx=newIndex;
uprv_memset(p, 0, n*mem->size);
}
return p;
}
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