d4ad287550
Currently there is just a difference of one word in-between fail/success state, this attempts to differenciate them to make the output easier to read for complicated recipes.
296 lines
11 KiB
Scheme
296 lines
11 KiB
Scheme
(define-module (potato make)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 exceptions)
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#:use-module (ice-9 optargs)
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#:use-module (ice-9 getopt-long)
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#:use-module (ice-9 receive)
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#:use-module (system vm trace)
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#:use-module (potato exceptions)
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#:use-module (potato makevars)
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#:use-module (potato rules)
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#:use-module (potato text)
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#:export (initialize
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execute)
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#:re-export (%suffix-rules
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lazy-assign ?=
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assign :=
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reference $ Q
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reference-func $$
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target-rule :
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suffix-rule ->
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target-name $@
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target-basename $*
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newer-prerequisites $? $$?
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prerequisites $^ $$^
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primary-prerequisite $<
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string-compose ~
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silent-compose ~@
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always-execute-compose ~+
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ignore-error-compose ~-
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install-alternate-system-driver
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))
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(define %version "1.0")
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(define %debug-argv0 #f)
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;; #:re-export (
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;; lazy-assign ?=
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;; assign :=
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;; ref $
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;; target-rule :
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;; suffix-rule ->
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;; compose ~
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;; ))
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;; Asynchronous events.
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;; SIGHUP, SIGTERM, SIGINT and SIGQUIT remove the current target
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;; unless that target is a directory or the target is a prerequisite
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;; of .PRECIOUS or the -n, -q, or -p option was specified. This
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;; deletion shall be reported to the error port, then the default for
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;; that action will continue.
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;; .SILENT
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;; The utility shall write all commands to the standard output unless
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;; the -s option was specified, the command is prefixed with +, or
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;; .SILENT has the current target as a prerequisite or has no pre
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;; requisites.
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;; Nothing to be done
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;; If make was invoked but found no work to do, it shall write a
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;; message to standard output that no action was taken
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;; File Touched
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;; If the -t option was specified, make shall write to standard
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;; output a message for each file that was touched.
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;; Verbosity is 0 = silent, 1 = terse, 2 = default, 3 = verbose
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(define %verbosity 2)
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(define %opt-verbose #f)
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(define %opt-ignore-errors #f)
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(define %opt-continue-on-error #f)
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(define %targets '())
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(define %initialized #f)
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(define (critical spec . args)
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(apply format (append (list #t spec) args)))
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(define (print spec . args)
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(when (>= %verbosity 2)
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(apply format (append (list #t spec) args))))
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(define (debug spec . args)
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(when (>= %verbosity 3)
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(apply format (append (list #t spec) args))))
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(define option-spec
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'((help (single-char #\h) (value #f))
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(version (single-char #\v) (value #f))
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(verbosity (single-char #\V) (value #t))
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(environment (single-char #\e) (value #f))
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(elevate-environment (single-char #\E) (value #f))
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(builtins (single-char #\b) (value #f))
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(ignore-errors (value #f))
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(continue-on-error (single-char #\k) (value #f))
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(no-execution (single-char #\n) (value #f))
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(ascii (single-char #\A) (value #f))
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(strict (single-char #\S) (value #f))
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))
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(define (display-help-and-exit argv0)
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(format #t "~A [-hvqVeEbn] [KEY=VALUE ...] [targets ...]~%" argv0)
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(format #t " -h, --help print help and exit~%")
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(format #t " -v, --version print version and exit~%")
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(format #t " -V 0..3, --verbosity=0..3~%")
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(format #t " set output level from 0=silent to 3=verbose~%")
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(format #t " -e, --environment use environment variables~%")
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(format #t " -E, --elevate-environment~%")
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(format #t " use environment variables and let~%")
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(format #t " them override script variables~%")
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(format #t " -b, --builtins~%")
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(format #t " include some common variables and suffix rules~%")
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(format #t " --ignore-errors~%")
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(format #t " ignore all errors~%")
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(format #t " -k, --continue-on-error~%")
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(format #t " after an error, keep building other targets~%")
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(format #t " -n, --no-execution~%")
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(format #t " only execute rules marked as 'always execute'~%")
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(format #t " -a, --ascii~%")
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(format #t " ASCII only output and no colors~%")
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(format #t " -S, --strict~%")
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(format #t " causes some behaviours to throw errors~%")
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(exit 0))
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(define (display-version-and-exit argv0)
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(format #t "~a~%" argv0)
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(format #t " using potato make~a~%" %version)
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(exit 0))
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(define (parse-macros lst)
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"Search for list for strings of the form KEY=VAR and return a list
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of pairs of KEY VAL"
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(filter-map
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(lambda (str)
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(let ((tok (string-split str #\=)))
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(cond
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((= 1 (length tok))
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#f)
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((= 2 (length tok))
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(cons (car tok) (cadr tok)))
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(else
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(invalid-macro "parse-macros" str)))))
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lst))
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(define (parse-targets lst)
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"Search the list for strings that don't have equals signs, and
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return them in a list."
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(filter-map
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(lambda (str)
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(if (string-index str #\=)
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#f
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str))
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lst))
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(define* (initialize #:optional
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(arguments #f))
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"Set up the options, rules, and makevars. If ARGUMENTS
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is not set, it will use options, makevars, and targets as
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specified by the command line. If it is set, it is
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expected to be a list of strings that are command-line
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arguments."
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;; If left unset, assume user want all the command line arguments.
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(when (not arguments)
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(set! arguments (command-line)))
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;; If the user has set it to '(), expecting a null environment, add
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;; back in a filename, which is required.
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(when (null? arguments)
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(set! arguments (list (car (program-arguments)))))
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;; We start of with the --help and --version command-line arguments.
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(let ((options (getopt-long arguments option-spec))
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(%opt-builtins #f)
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(%opt-environment #f)
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(%opt-elevate-environment #f)
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(%opt-no-errors #f)
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(%opt-continue-on-error #f)
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(%opt-no-execution #f)
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(%opt-ascii #f)
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(%opt-strict #f))
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(when (option-ref options 'help #f)
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(display-help-and-exit (car arguments)))
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(when (option-ref options 'version #f)
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(display-version-and-exit (car arguments)))
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;; Then, we do --environment, because we need to know that
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;; before we start parsing MAKEFLAGS
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(set! %opt-environment
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(option-ref options 'environment #f))
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;; Parse MAKEFLAGS before the command-line, because we want
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;; command-line options to override MAKEFLAGS options.
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(when %opt-environment
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(let ((mf (getenv "MAKEFLAGS")))
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(when mf
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(let ((tokens (string-tokenize mf)))
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(when (member "silent" tokens)
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(set! %verbosity 0))
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(when (member "terse" tokens)
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(set! %verbosity 1))
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(when (member "verbose" tokens)
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(set! %verbosity 3))
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(when (member "builtins" tokens)
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(set! %opt-builtins #t))
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(when (member "ascii" tokens)
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(set! %opt-ascii #t))
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(when (member "ignore-errors" tokens)
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(set! %opt-ignore-errors #t))
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(when (member "continue-on-error" tokens)
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(set! %opt-continue-on-error #t))
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(when (member "strict" tokens)
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(set! %opt-strict #t))
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(when (member "no-execution" tokens)
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(set! %opt-no-execution #t))))))
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;; Now the bulk of the command-line options.
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(when (option-ref options 'verbosity #f)
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(let ((verbosity (string->number (option-ref options 'verbosity #f))))
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(when verbosity
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(set! %verbosity verbosity))))
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(when (option-ref options 'builtins #f)
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(set! %opt-builtins #t))
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(when (option-ref options 'elevate-environment #f)
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(set! %opt-elevate-environment #t))
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(when (option-ref options 'ignore-errors #f)
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(set! %opt-ignore-errors #t))
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(when (option-ref options 'continue-on-error #f)
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(set! %opt-continue-on-error #t))
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(when (option-ref options 'no-execution #f)
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(set! %opt-no-execution #t))
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(when (option-ref options 'ascii #f)
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(set! %opt-ascii #t))
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(when (option-ref options 'strict #f)
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(set! %opt-strict #t))
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;; Now that all the options are set, we can set up
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;; the build environment.
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(let ((extra (option-ref options '() '())))
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(initialize-text %opt-ascii)
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(initialize-makevars (parse-macros extra)
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%opt-environment
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%opt-elevate-environment
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%opt-builtins
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%opt-strict
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%verbosity
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%opt-ascii)
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;; The remaining command-line words are the build targets that
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;; we're going to tackle.
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(set! %targets (parse-targets extra))
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(initialize-rules %targets
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%opt-builtins
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%opt-ignore-errors
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%opt-continue-on-error
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%opt-no-execution
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%verbosity
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%opt-ascii)
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(set! %initialized #t)
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%targets
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)))
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(define* (execute #:key (targets '()))
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"This function runs build actions. TARGETS, if provided, is a list
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of target names to be executed. If TARGETS is not provided, the
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targets listed on the parsed command-line are used."
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;; First, let's figure out what targets we're building.
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(unless %initialized
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(critical "The initialize procedure was not called in this build script.~%")
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(critical "Using an empty environment.~%"))
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(when (null? targets)
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(set! targets %targets))
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(when (null? targets)
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(debug "No build target was explicitely specified.~%")
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(let ((rule (first-target-rule-name)))
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(if rule
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(begin
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(debug "Using first rule ~a~A~a as the build target.~%" (lquo) rule (rquo))
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(set! targets (list rule)))
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;; else
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(debug "There are no target rules in the recipe.~%"))))
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;; Build each target in order.
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(when (not (null? targets))
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(let loop ((target (car targets))
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(rest (cdr targets)))
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(if (not (build target))
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(begin
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(print "The recipe for “~A” has failed.~%" target)
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#f)
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;; else
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(begin
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(print "The recipe “~A” finished successfully.~%" target)
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(if (not (null? rest))
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(loop (car rest) (cdr rest))
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;; True if all targets are built successfully.
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#t))))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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