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| author | Philippe Waroquiers <philippe.waroquiers@skynet.be> | 2019-04-20 14:14:23 +0200 |
|---|---|---|
| committer | Philippe Waroquiers <philippe.waroquiers@skynet.be> | 2019-05-31 17:12:18 +0200 |
| commit | 947d39462e26b0edee9b58003ea579552dbf4fa8 (patch) | |
| tree | b9852eb9de8f1b0df7dee3f140c239a6f87cfe75 /gdb/cli/cli-decode.c | |
| parent | b8fd091888383703f5d708c597c496d7b9e47a21 (diff) | |
| download | gdb-947d39462e26b0edee9b58003ea579552dbf4fa8.zip gdb-947d39462e26b0edee9b58003ea579552dbf4fa8.tar.gz gdb-947d39462e26b0edee9b58003ea579552dbf4fa8.tar.bz2 | |
Implement | (pipe) command.
The pipe command allows to run a GDB command, and pipe its output
to a shell command:
(gdb) help pipe
Send the output of a gdb command to a shell command.
Usage: | [COMMAND] | SHELL_COMMAND
Usage: | -d DELIM COMMAND DELIM SHELL_COMMAND
Usage: pipe [COMMAND] | SHELL_COMMAND
Usage: pipe -d DELIM COMMAND DELIM SHELL_COMMAND
Executes COMMAND and sends its output to SHELL_COMMAND.
The -d option indicates to use the string DELIM to separate COMMAND
from SHELL_COMMAND, in alternative to |. This is useful in
case COMMAND contains a | character.
With no COMMAND, repeat the last executed command
and send its output to SHELL_COMMAND.
(gdb)
For example:
(gdb) pipe print some_data_structure | grep -B3 -A3 something
The pipe character is defined as an alias for pipe command, so that
the above can be typed as:
(gdb) | print some_data_structure | grep -B3 -A3 something
If no GDB COMMAND is given, then the previous command is relaunched,
and its output is sent to the given SHELL_COMMAND.
This also defines convenience vars $_shell_exitcode and $_shell_exitsignal
to record the exit code and exit signal of the last shell command
launched by GDB e.g. by "shell", "pipe", ...
gdb/ChangeLog
2019-05-31 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* cli/cli-cmds.c (pipe_command): New function.
(_initialize_cli_cmds): Call add_com for pipe_command.
Define | as an alias for pipe.
(exit_status_set_internal_vars): New function.
(shell_escape): Call exit_status_set_internal_vars.
cli/cli-decode.c (find_command_name_length): Recognize | as
a single character command.
Diffstat (limited to 'gdb/cli/cli-decode.c')
| -rw-r--r-- | gdb/cli/cli-decode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gdb/cli/cli-decode.c b/gdb/cli/cli-decode.c index 72e2a97..e3076f2 100644 --- a/gdb/cli/cli-decode.c +++ b/gdb/cli/cli-decode.c @@ -1311,9 +1311,9 @@ find_command_name_length (const char *text) Note that this is larger than the character set allowed when creating user-defined commands. */ - /* Recognize '!' as a single character command so that, e.g., "!ls" + /* Recognize the single character commands so that, e.g., "!ls" works as expected. */ - if (*p == '!') + if (*p == '!' || *p == '|') return 1; while (isalnum (*p) || *p == '-' || *p == '_' |