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authorChris Dyer <cdyer@allegro.clab.cs.cmu.edu>2014-01-28 00:18:37 -0500
committerChris Dyer <cdyer@allegro.clab.cs.cmu.edu>2014-01-28 00:18:37 -0500
commit0ee2b44c5c0981358ade9ddab1d083bbe1de5daf (patch)
tree2dc8d9b9efb24b3a3b5c2bcaf0b55df30743d151 /klm/util/file.cc
parent2ac0704a463d45f0bfe23184a1ea9950d60fd546 (diff)
parent783c57b2d3312738ddcf992ac55ff750afe7cb47 (diff)
Merge branch 'master' of github.com:redpony/cdec
Diffstat (limited to 'klm/util/file.cc')
-rw-r--r--klm/util/file.cc26
1 files changed, 21 insertions, 5 deletions
diff --git a/klm/util/file.cc b/klm/util/file.cc
index bef04cb1..51eaf972 100644
--- a/klm/util/file.cc
+++ b/klm/util/file.cc
@@ -17,7 +17,11 @@
#include <fcntl.h>
#include <stdint.h>
-#if defined(_WIN32) || defined(_WIN64)
+#if defined __MINGW32__
+#include <windows.h>
+#include <unistd.h>
+#warning "The file functions on MinGW have not been tested for file sizes above 2^31 - 1. Please read https://stackoverflow.com/questions/12539488/determine-64-bit-file-size-in-c-on-mingw-32-bit and fix"
+#elif defined(_WIN32) || defined(_WIN64)
#include <windows.h>
#include <io.h>
#include <algorithm>
@@ -76,7 +80,13 @@ int CreateOrThrow(const char *name) {
}
uint64_t SizeFile(int fd) {
-#if defined(_WIN32) || defined(_WIN64)
+#if defined __MINGW32__
+ struct stat sb;
+ // Does this handle 64-bit?
+ int ret = fstat(fd, &sb);
+ if (ret == -1 || (!sb.st_size && !S_ISREG(sb.st_mode))) return kBadSize;
+ return sb.st_size;
+#elif defined(_WIN32) || defined(_WIN64)
__int64 ret = _filelengthi64(fd);
return (ret == -1) ? kBadSize : ret;
#else // Not windows.
@@ -100,7 +110,10 @@ uint64_t SizeOrThrow(int fd) {
}
void ResizeOrThrow(int fd, uint64_t to) {
-#if defined(_WIN32) || defined(_WIN64)
+#if defined __MINGW32__
+ // Does this handle 64-bit?
+ int ret = ftruncate
+#elif defined(_WIN32) || defined(_WIN64)
errno_t ret = _chsize_s
#elif defined(OS_ANDROID)
int ret = ftruncate64
@@ -115,7 +128,7 @@ namespace {
std::size_t GuardLarge(std::size_t size) {
// The following operating systems have broken read/write/pread/pwrite that
// only supports up to 2^31.
-#if defined(_WIN32) || defined(_WIN64) || defined(__APPLE__) || defined(OS_ANDROID)
+#if defined(_WIN32) || defined(_WIN64) || defined(__APPLE__) || defined(OS_ANDROID) || defined(__MINGW32__)
return std::min(static_cast<std::size_t>(static_cast<unsigned>(-1)), size);
#else
return size;
@@ -251,7 +264,10 @@ typedef CheckOffT<sizeof(off_t)>::True IgnoredType;
// Can't we all just get along?
void InternalSeek(int fd, int64_t off, int whence) {
if (
-#if defined(_WIN32) || defined(_WIN64)
+#if defined __MINGW32__
+ // Does this handle 64-bit?
+ (off_t)-1 == lseek(fd, off, whence)
+#elif defined(_WIN32) || defined(_WIN64)
(__int64)-1 == _lseeki64(fd, off, whence)
#elif defined(OS_ANDROID)
(off64_t)-1 == lseek64(fd, off, whence)