diff options
Diffstat (limited to 'Documentation/technical')
| -rw-r--r-- | Documentation/technical/api-parse-options.txt | 12 | ||||
| -rw-r--r-- | Documentation/technical/api-run-command.txt | 52 | ||||
| -rw-r--r-- | Documentation/technical/api-string-list.txt | 6 | ||||
| -rw-r--r-- | Documentation/technical/pack-protocol.txt | 10 |
4 files changed, 63 insertions, 17 deletions
diff --git a/Documentation/technical/api-parse-options.txt b/Documentation/technical/api-parse-options.txt index 50f9e9ac17..312e3b2e2b 100644 --- a/Documentation/technical/api-parse-options.txt +++ b/Documentation/technical/api-parse-options.txt @@ -115,6 +115,9 @@ There are some macros to easily define options: `OPT__ABBREV(&int_var)`:: Add `\--abbrev[=<n>]`. +`OPT__COLOR(&int_var, description)`:: + Add `\--color[=<when>]` and `--no-color`. + `OPT__DRY_RUN(&int_var)`:: Add `-n, \--dry-run`. @@ -183,6 +186,15 @@ There are some macros to easily define options: arguments. Short options that happen to be digits take precedence over it. +`OPT_COLOR_FLAG(short, long, &int_var, description)`:: + Introduce an option that takes an optional argument that can + have one of three values: "always", "never", or "auto". If the + argument is not given, it defaults to "always". The `--no-` form + works like `--long=never`; it cannot take an argument. If + "always", set `int_var` to 1; if "never", set `int_var` to 0; if + "auto", set `int_var` to 1 if stdout is a tty or a pager, + 0 otherwise. + The last element of the array must be `OPT_END()`. diff --git a/Documentation/technical/api-run-command.txt b/Documentation/technical/api-run-command.txt index 68bf4cad8b..44876fa703 100644 --- a/Documentation/technical/api-run-command.txt +++ b/Documentation/technical/api-run-command.txt @@ -64,8 +64,8 @@ The functions above do the following: `start_async`:: Run a function asynchronously. Takes a pointer to a `struct - async` that specifies the details and returns a pipe FD - from which the caller reads. See below for details. + async` that specifies the details and returns a set of pipe FDs + for communication with the function. See below for details. `finish_async`:: @@ -135,7 +135,7 @@ stderr as follows: .in: The FD must be readable; it becomes child's stdin. .out: The FD must be writable; it becomes child's stdout. - .err > 0 is not supported. + .err: The FD must be writable; it becomes child's stderr. The specified FD is closed by start_command(), even if it fails to run the sub-process! @@ -180,17 +180,47 @@ The caller: struct async variable; 2. initializes .proc and .data; 3. calls start_async(); -4. processes the data by reading from the fd in .out; -5. closes .out; +4. processes communicates with proc through .in and .out; +5. closes .in and .out; 6. calls finish_async(). +The members .in, .out are used to provide a set of fd's for +communication between the caller and the callee as follows: + +. Specify 0 to have no file descriptor passed. The callee will + receive -1 in the corresponding argument. + +. Specify < 0 to have a pipe allocated; start_async() replaces + with the pipe FD in the following way: + + .in: Returns the writable pipe end into which the caller + writes; the readable end of the pipe becomes the function's + in argument. + + .out: Returns the readable pipe end from which the caller + reads; the writable end of the pipe becomes the function's + out argument. + + The caller of start_async() must close the returned FDs after it + has completed reading from/writing from them. + +. Specify a file descriptor > 0 to be used by the function: + + .in: The FD must be readable; it becomes the function's in. + .out: The FD must be writable; it becomes the function's out. + + The specified FD is closed by start_async(), even if it fails to + run the function. + The function pointer in .proc has the following signature: - int proc(int fd, void *data); + int proc(int in, int out, void *data); -. fd specifies a writable file descriptor to which the function must - write the data that it produces. The function *must* close this - descriptor before it returns. +. in, out specifies a set of file descriptors to which the function + must read/write the data that it needs/produces. The function + *must* close these descriptors before it returns. A descriptor + may be -1 if the caller did not configure a descriptor for that + direction. . data is the value that the caller has specified in the .data member of struct async. @@ -205,8 +235,8 @@ because this facility is implemented by a pipe to a forked process on UNIX, but by a thread in the same address space on Windows: . It cannot change the program's state (global variables, environment, - etc.) in a way that the caller notices; in other words, .out is the - only communication channel to the caller. + etc.) in a way that the caller notices; in other words, .in and .out + are the only communication channels to the caller. . It must not change the program's state that the caller of the facility also uses. diff --git a/Documentation/technical/api-string-list.txt b/Documentation/technical/api-string-list.txt index 293bb15d20..6d8c24bb1e 100644 --- a/Documentation/technical/api-string-list.txt +++ b/Documentation/technical/api-string-list.txt @@ -104,8 +104,12 @@ write `string_list_insert(...)->util = ...;`. `unsorted_string_list_has_string`:: It's like `string_list_has_string()` but for unsorted lists. + +`unsorted_string_list_lookup`:: + + It's like `string_list_lookup()` but for unsorted lists. + -This function needs to look through all items, as opposed to its +The above two functions need to look through all items, as opposed to their counterpart for sorted lists, which performs a binary search. Data structures diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt index 9a5cdafa9c..369f91d3b9 100644 --- a/Documentation/technical/pack-protocol.txt +++ b/Documentation/technical/pack-protocol.txt @@ -36,7 +36,7 @@ Git Transport The Git transport starts off by sending the command and repository on the wire using the pkt-line format, followed by a NUL byte and a -hostname paramater, terminated by a NUL byte. +hostname parameter, terminated by a NUL byte. 0032git-upload-pack /project.git\0host=myserver.com\0 @@ -331,7 +331,7 @@ An incremental update (fetch) response might look like this: C: 0009done\n - S: 003aACK 74730d410fcb6603ace96f1dc55ea6196122532d\n + S: 0031ACK 74730d410fcb6603ace96f1dc55ea6196122532d\n S: [PACKFILE] ---- @@ -488,7 +488,7 @@ An example client/server communication might look like this: C: 0000 C: [PACKDATA] - S: 000aunpack ok\n - S: 0014ok refs/heads/debug\n - S: 0026ng refs/heads/master non-fast-forward\n + S: 000eunpack ok\n + S: 0018ok refs/heads/debug\n + S: 002ang refs/heads/master non-fast-forward\n ---- |