ClientUser::RunCmd( const char *, const char *, […​], Error * )

Call an external program.

Virtual?

No

  

Class

ClientUser (static)

  

Arguments

const char *command

the executable to be called
 

const char *arg1

the first argument
 

const char *arg2

the second argument
 

const char *arg3

the third argument
 

const char *arg4

the fourth argument
 

const char *pager

a pager, if any
 

Error *e

an Error object to hold system errors

Returns

void

 

Notes

RunCmd() is called when the client needs to call an external program, such as a merge or diff utility. RunCmd() stores any resulting errors in the specified Error object.

Example

If you select "d" for "Diff" during an interactive resolve, and both P4DIFF and P4PAGER are set in your environment, RunCmd() is called with the following arguments:

Argument Value

command

P4DIFF

arg1

local file name

arg2

temp file name (depot file)

arg3

null

arg4

null

pager

P4PAGER

The P4DIFF program is called with the two file names as arguments, and the output is piped through the P4PAGER program.

See the examples for Diff() and Merge() for code illustrating the use of RunCmd().