spec

Contents → STANDARD MACRO GUIDE → Utility Macros → Reading From Command Files

← Prev | Next →

do command_file                     # Run a command file
qdo command_file                    # Run a command file without echo
newmac                              # Reread standard command files

Since the do and qdo macros have nearly identical functionality, the commands for both are placed in a single macro named _do. This macro implements special functions, such as letting a dot stand for the previous command file or searching for a command file first in the current directory and then in a special command file directory.

# "do" a command file.
def do  '_do $* do'

# Quietly "do" a command file.
def qdo '_do $* qdo'

# Run a command file.  If not in current directory, look for
# file in DO_DIR.  Save file name in DOFILE so "do ." works.
def _do '
      if ($# != 2 || ("$2" != "do" && "$2" != "qdo")) {
              print "Usage:  do file"
              print "       qdo file"
              exit
      }
      if ("$1" == "." && DOFILE == ") {
              print "No previous do file."
              exit
      }
      if ("$1" != ".") {
              DOFILE = "$1"
              if (DO_DIR != "." && unix(sprintf("test -r %s", DOFILE))) {
                      local t

                      t=sprintf("%s/%s", DO_DIR, DOFILE)
                      if (!unix(sprintf("test -r %s", t)))
                              DOFILE = t
              }
      }
      if (!unix(sprintf("test -r %s", DOFILE))) {
              qcomment "do %s" DOFILE
              $2file(DOFILE)
      } else {
              printf("Can\'t read command file \"%s\".\n", DOFILE)
              exit
      }
'

The newmac macro rereads the standard macro files that reside in SPECD the auxiliary file directory (usually /usr/lib/spec.d). Invoking newmac is useful if a new version of the standard macros has been installed but you do not want to start fresh, or if you have somehow corrupted the definition of a standard macro and want to get back the original definition.

Top ↑

← Prev | Next →