espressif/binutils-gdb
1
0
Fork 0
mirror of https://github.com/espressif/binutils-gdb.git synced 2025-06-03 05:12:28 +08:00
Code Issues Packages Projects Releases Wiki Activity

Implement | (pipe) command.

Browse Source 
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.
This commit is contained in:
Philippe Waroquiers
2019-04-20 14:14:23 +02:00
parent b8fd091888
commit 947d39462e
3 changed files with 116 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
gdb/cli/cli-decode.c
View File

@ -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 == '_'