lyx_mirror/src/support/os_os2.C
Jean-Marc Lasgouttes 72956b1c3b cygwin/popen fix from kayvan
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5331 a592a061-630c-0410-9148-cb99ea01b6c8
2002-09-23 16:03:11 +00:00

190 lines
4.4 KiB
C

// os_os2.C
// Various OS specific functions
#include <config.h>
#ifdef __GNUG__
#pragma implementation "os.h"
#endif
#include "os.h"
#include "support/filetools.h"
#define INCL_DOSFILEMGR
#define INCL_DOSMODULEMGR
#define INCL_DOSPROCESS
#define INCL_DOSNLS
#define INCL_DOSERRORS
#include <os2.h>
string os::binpath_ = string();
string os::binname_ = string();
string os::tmpdir_ = string();
os::shell_type os::_shell = os::UNIX;
unsigned long os::cp_ = 0;
void os::init(int * argc, char ** argv[]) {
if (argc != 0 /* This is a hack! */) {
_wildcard(argc, argv);
PTIB ptib = new TIB[1];
PPIB ppib = new PIB[1];
APIRET rc = DosGetInfoBlocks(&ptib, &ppib);
if (rc != NO_ERROR)
exit(rc);
char* tmp = new char[256];
// This is the only reliable way to retrieve the executable name.
rc = DosQueryModuleName(ppib->pib_hmte, 256L, tmp);
if (rc != NO_ERROR)
exit(rc);
string p(tmp);
p = slashify_path(p);
binname_ = OnlyFilename(p);
binname_.erase(binname_.length()-4, string::npos);
binpath_ = OnlyPath(p);
// OS/2 cmd.exe has another use for '&'
string sh = OnlyFilename(GetEnvPath("EMXSHELL"));
if (sh.empty()) {
// COMSPEC is set, unless user unsets
sh = OnlyFilename(GetEnvPath("COMSPEC"));
if (sh.empty())
sh = "cmd.exe";
}
sh = lowercase(sh); // DosMapCase() is an overkill here
if (contains(sh, "cmd.exe")
|| contains(sh, "4os2.exe"))
_shell = os::CMD_EXE;
else
_shell = os::UNIX;
}
static bool initialized = false;
if (initialized) return;
initialized = true;
ULONG CPList[3] = {0}, CPList_size;
APIRET rc = DosQueryCp(3 * sizeof(ULONG), CPList, &CPList_size);
if (rc != NO_ERROR)
exit(rc);
// CPList[0] == process current codepage,
// CPList[1] == system default codepage, the rest are auxilary.
// Once cp_ is correctly set, you can call other routines.
cp_ = CPList[1];
}
void os::warn(string /*mesg*/) {
return;
}
string os::current_root() {
APIRET rc;
ULONG drv_num, drv_map;
rc = DosQueryCurrentDisk(&drv_num, &drv_map);
if (rc != NO_ERROR)
exit(rc);
char drive = 'A' + drv_num -1;
string tmp(1, drive);
tmp += ":/";
return tmp;
}
string::size_type os::common_path(string const &p1, string const &p2) {
static bool initialized = false;
if (!initialized) {
init(0, 0);
initialized = true;
}
COUNTRYCODE cntry;
cntry.country = 0;
cntry.codepage = cp_;
string temp1 = slashify_path(p1);
string temp2 = slashify_path(p2);
char * tmp1 = const_cast<char*> (temp1.c_str());
char * tmp2 = const_cast<char*> (temp2.c_str());
/* rc = */ DosMapCase(p1.length(), &cntry, tmp1);
// if (rc != NO_ERROR)
// exit(rc);
/* rc = */ DosMapCase(p2.length(), &cntry, tmp2);
// if (rc != NO_ERROR)
// exit(rc);
// This algorithm works only if paths are slashified on DBCS systems.
string::size_type i = 0,
p1_len = p1.length(),
p2_len = p2.length();
while (i < p1_len && i < p2_len && tmp1[i] == tmp2[i]) ++i;
if ((i < p1_len && i < p2_len)
|| (i < p1_len && tmp1[i] != '/' && i == p2_len)
|| (i < p2_len && tmp2[i] != '/' && i == p1_len)) {
if (i) --i; // here was the last match
while (i && tmp1[i] != '/') --i;
}
return i;
}
string os::slashify_path(string p) {
static bool initialized = false;
static bool leadbyte[256] = {false};
if (!initialized) {
init(0, 0);
COUNTRYCODE cntry;
cntry.country = 0;
cntry.codepage = cp_;
unsigned char *DBCSinfo = new unsigned char[12];
/* rc = */ DosQueryDBCSEnv(12, &cntry, (char*) DBCSinfo);
// if (rc != NO_ERROR)
// exit(rc);
for (int j = 1; j < 12; j += 2)
DBCSinfo[j]++;
unsigned char i = 0;
bool isLeadByte = false;
while (*DBCSinfo != 0) {
if (i == *DBCSinfo) {
isLeadByte = !isLeadByte;
DBCSinfo++;
}
leadbyte[i++] = isLeadByte;
}
initialized = true;
}
string::iterator lit = p.begin();
string::iterator end = p.end();
for (; lit < end; ++lit) {
if (leadbyte[(*lit)])
lit += 2;
if ((*lit) == '\\')
(*lit) = '/';
}
p = subst(p, "//", "/");
return p;
}
string os::external_path(string const &p) {
return p;
}
string os::internal_path(string const &p) {
return p;
}
bool os::is_absolute_path(string const & p)
{
return (p.length() > 1
&& isalpha(static_cast<unsigned char>(p[0]))
&& p[1] == ':');
}
// returns a string suitable to be passed to fopen when
// reading a file
char const * os::read_mode()
{
return "r";
}
// returns a string suitable to be passed to popen when
// reading a pipe
char const * os::popen_read_mode()
{
return "r";
}