tig.c: compare_refs: fix comparing by ref->ltag
[tig.git] / io.h
blobae387cb75ab017670b1bc66285d90a4f7b89b9c0
1 /* Copyright (c) 2006-2010 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #ifndef TIG_IO_H
15 #define TIG_IO_H
18 * Argument array helpers.
21 bool argv_from_string_no_quotes(const char *argv[SIZEOF_ARG], int *argc, char *cmd);
22 bool argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd);
23 bool argv_from_env(const char **argv, const char *name);
24 void argv_free(const char *argv[]);
25 size_t argv_size(const char **argv);
26 bool argv_append(const char ***argv, const char *arg);
27 bool argv_append_array(const char ***dst_argv, const char *src_argv[]);
28 bool argv_copy(const char ***dst, const char *src[]);
31 * Executing external commands.
34 enum io_type {
35 IO_FD, /* File descriptor based IO. */
36 IO_BG, /* Execute command in the background. */
37 IO_FG, /* Execute command with same std{in,out,err}. */
38 IO_RD, /* Read only fork+exec IO. */
39 IO_WR, /* Write only fork+exec IO. */
40 IO_AP, /* Append fork+exec output to file. */
43 struct io {
44 int pipe; /* Pipe end for reading or writing. */
45 pid_t pid; /* PID of spawned process. */
46 int error; /* Error status. */
47 char *buf; /* Read buffer. */
48 size_t bufalloc; /* Allocated buffer size. */
49 size_t bufsize; /* Buffer content size. */
50 char *bufpos; /* Current buffer position. */
51 unsigned int eof:1; /* Has end of file been reached. */
54 typedef int (*io_read_fn)(char *, size_t, char *, size_t, void *data);
56 bool io_open(struct io *io, const char *fmt, ...);
57 bool io_kill(struct io *io);
58 bool io_done(struct io *io);
59 bool io_run(struct io *io, enum io_type type, const char *dir, const char *argv[], ...);
60 bool io_run_bg(const char **argv);
61 bool io_run_fg(const char **argv, const char *dir);
62 bool io_run_append(const char **argv, int fd);
63 bool io_eof(struct io *io);
64 int io_error(struct io *io);
65 char * io_strerror(struct io *io);
66 bool io_can_read(struct io *io, bool can_block);
67 ssize_t io_read(struct io *io, void *buf, size_t bufsize);
68 char * io_get(struct io *io, int c, bool can_read);
69 bool io_write(struct io *io, const void *buf, size_t bufsize);
70 bool io_read_buf(struct io *io, char buf[], size_t bufsize);
71 bool io_run_buf(const char **argv, char buf[], size_t bufsize);
72 int io_load(struct io *io, const char *separators,
73 io_read_fn read_property, void *data);
74 int io_run_load(const char **argv, const char *separators,
75 io_read_fn read_property, void *data);
77 #endif