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Remove config.h and make fileops an internal API

Browse Source 
Since it doesn't make sense to make the disk access stuff
portable *AND* public (that's a job for each application
imo), we can take a shortcut and just support unixy stuff
for now and get away with coding most of it as macros.

Since we go with an internal API for starters and only
provide higher-level API's to the libgit users, we'll be
ok with this approach.

Signed-off-by: Andreas Ericsson <ae@op5.se>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Andreas Ericsson 2008-11-23 22:37:55 +01:00 committed by Shawn O. Pearce
parent 42c07750c4
commit ec250c6e18
10 changed files with 90 additions and 224 deletions
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11
Makefile
View File

@ -14,11 +14,6 @@ OBJS = $(patsubst %.c,%.o,$(SRC_C))
HDRS = $(wildcard src/*.h)
PUBLIC_HEADERS = $(wildcard src/git/*.h)
HDRS += $(PUBLIC_HEADERS)
CONFIG_H = src/git/config.h
OBJS += src/os/$(OS).o
HDRS += src/git/config.h
HDRS += src/git/os/$(OS).h
GIT_LIB = libgit2.a
@ -42,7 +37,7 @@ apidocs:
test: $(TEST_RUN)
sparse: $(CONFIG_H)
sparse:
sparse -DSPARSE_IS_RUNNING $(ALL_CFLAGS) $(SPARSE_FLAGS) $(SRC_C)
install-headers: $(PUBLIC_HEADERS)
@ -52,10 +47,6 @@ install-headers: $(PUBLIC_HEADERS)
.c.o:
$(CC) $(ALL_CFLAGS) -c $< -o $@
$(CONFIG_H): $(CONFIG_H).in
sed 's/@@OS@@/$(OS)/g' $< >$@+
mv $@+ $@
$(OBJS): $(HDRS)
$(GIT_LIB): $(OBJS)
rm -f $(LIB)

1
src/errors.h
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@ -1,6 +1,7 @@
#ifndef INCLUDE_errors_h__
#define INCLUDE_errors_h__
#include "git/errors.h"
#include <stdlib.h>
/* convenience functions */
static inline int git_int_error(int code)

49
src/fileops.c Normal file
View File

@ -0,0 +1,49 @@
#include "fileops.h"
int gitfo_read(git_file fd, void *buf, size_t cnt)
{
char *b = buf;
while (cnt) {
ssize_t r = read(fd, b, cnt);
if (r < 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
return -1;
}
if (!r) {
errno = EPIPE;
return -1;
}
cnt -= r;
b += r;
}
return GIT_SUCCESS;
}
int gitfo_write(git_file fd, void *buf, size_t cnt)
{
char *b = buf;
while (cnt) {
ssize_t r = write(fd, b, cnt);
if (r < 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
return -1;
}
if (!r) {
errno = EPIPE;
return -1;
}
cnt -= r;
b += r;
}
return GIT_SUCCESS;
}
off_t gitfo_size(git_file fd)
{
gitfo_statbuf sb;
if (fstat(fd, &sb))
return -1;
return sb.st_size;
}

37
src/fileops.h Normal file
View File

@ -0,0 +1,37 @@
/*
* fileops.h - OS agnostic disk io operations
*
* This header describes the strictly internal part of the api
*/
#ifndef INCLUDE_fileops_h__
#define INCLUDE_fileops_h__
/** Force 64 bit off_t size on POSIX. */
#define _FILE_OFFSET_BITS 64
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>
#include "errors.h"
typedef int git_file;
typedef struct stat gitfo_statbuf;
#define gitfo_open(path, flags) open(path, flags)
#define gitfo_close(fd) close(fd)
extern int gitfo_read(git_file fd, void *buf, size_t cnt);
extern int gitfo_write(git_file fd, void *buf, size_t cnt);
extern off_t gitfo_size(git_file fd);
#define gitfo_lstat(path, buf) lstat(path, buf)
#define gitfo_fstat(fd, buf) fstat(fd, buf)
#define gitfo_stat(path, buf) stat(path, buf)
#define gitfo_fsync(fd) fsync(fd)
#endif /* INCLUDE_fileops_h__ */

2
src/git/common.h
View File

@ -55,8 +55,6 @@
/** Input does not exist in the scope searched. */
#define GIT_ENOTFOUND (GIT_ERROR - 2)
#include "git/config.h"
GIT_BEGIN_DECL
/** A revision traversal pool. */

6
src/git/config.h.in
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@ -1,6 +0,0 @@
#ifndef INCLUDE_git_config_h__
#define INCLUDE_git_config_h__
#include "git/os/@@OS@@.h"
#endif

1
src/git/odb.h
View File

@ -3,6 +3,7 @@
#include "common.h"
#include "oid.h"
#include <stdlib.h>
/**
* @file git/odb.h

1
src/git/oid.h
View File

@ -2,6 +2,7 @@
#define INCLUDE_git_oid_h__
#include "common.h"
#include <string.h>
/**
* @file git/oid.h

123
src/git/os/unix.h
View File

@ -1,123 +0,0 @@
/*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDE_git_os_abstraction_h__
#define INCLUDE_git_os_abstraction_h__
/** Force 64 bit off_t size on POSIX. */
#define _FILE_OFFSET_BITS 64
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>
/**
* @file git/os/unix.h
* @brief Portable operating system abstractions
* @defgroup git_os_abstraction Portable operating system abstractions
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/** Descriptor to an open file in the filesystem. */
typedef int git_file;
/**
* Open a file by path name.
*
* Valid flags are:
* - O_CREAT: Create the file if it does not yet exist.
* - O_RDONLY: Open the file for reading.
* - O_WRONLY: Open the file for writing.
* - O_RDWR: Open the file for both reading and writing.
*
* @param out descriptor storage to populate on success.
* @param path path name of the file to open.
* @param flags bitmask of access requested to the file.
* @return
* - On success, GIT_SUCCESS.
* - On error, <0.
*/
GIT_EXTERN(int) git_fopen(git_file *out, const char *path, int flags);
/**
* Read from an open file descriptor at the current position.
*
* Exactly the requested number of bytes is read. If the stream
* ends early, an error is indicated, and the exact number of bytes
* transferred is unspecified.
*
* @param fd open descriptor.
* @param buf buffer to store the read data into.
* @param cnt number of bytes to transfer.
* @return
* - On success, GIT_SUCCESS.
* - On error, <0.
*/
GIT_EXTERN(int) git_fread(git_file fd, void *buf, size_t cnt);
/**
* Write to an open file descriptor at the current position.
*
* Exactly the requested number of bytes is written. If the stream
* ends early, an error is indicated, and the exact number of bytes
* transferred is unspecified.
*
* @param fd open descriptor.
* @param buf buffer to write data from.
* @param cnt number of bytes to transfer.
* @return
* - On success, GIT_SUCCESS.
* - On error, <0.
*/
GIT_EXTERN(int) git_fwrite(git_file fd, void *buf, size_t cnt);
/**
* Get the current size of an open file.
* @param fd open descriptor.
* @return
* - On success, >= 0, indicating the file size in bytes.
* - On error, <0.
*/
GIT_EXTERN(off_t) git_fsize(git_file fd);
/**
* Close an open file descriptor.
* @param fd descriptor to close.
* @return
* - On success, GIT_SUCCESS.
* - On error, <0.
*/
#define git_fclose(fd) close(fd)
/** @} */
GIT_END_DECL
#endif

83
src/os/unix.c
View File

@ -1,83 +0,0 @@
/*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "git/common.h"
int git_fopen(git_file *out, const char *path, int flags)
{
int r = open(path, flags);
if (r < 0)
return -1;
*out = r;
return GIT_SUCCESS;
}
int git_fread(git_file fd, void *buf, size_t cnt)
{
char *b = buf;
while (cnt) {
ssize_t r = read(fd, b, cnt);
if (r < 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
return -1;
}
if (!r) {
errno = EPIPE;
return -1;
}
cnt -= r;
b += r;
}
return GIT_SUCCESS;
}
int git_fwrite(git_file fd, void *buf, size_t cnt)
{
char *b = buf;
while (cnt) {
ssize_t r = write(fd, b, cnt);
if (r < 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
return -1;
}
if (!r) {
errno = EPIPE;
return -1;
}
cnt -= r;
b += r;
}
return GIT_SUCCESS;
}
off_t git_fsize(git_file fd)
{
struct stat sb;
if (fstat(fd, &sb))
return -1;
return sb.st_size;
}