interpreter: Allow install_script to use additional input types

This adds support for Files, CustomTarget, Indexs of CustomTargets,
ConfigureFiles, ExternalPrograms, and Executables.

Fixes: #1234
Fixes: #3552
Fixes: #6175

mesonbuild/interpreter.py

@@ -1893,31 +1893,79 @@ class MesonMain(InterpreterObject):
                              'backend': self.backend_method,
                              })
 
-    def _find_source_script(self, name, args):
+    def _find_source_script(self, prog: T.Union[str, ExecutableHolder], args):
+        if isinstance(prog, ExecutableHolder):
+            prog_path = self.interpreter.backend.get_target_filename(prog.held_object)
+            return build.RunScript([prog_path], args)
+        elif isinstance(prog, ExternalProgramHolder):
+            return build.RunScript(prog.get_command(), args)
+
         # Prefer scripts in the current source directory
         search_dir = os.path.join(self.interpreter.environment.source_dir,
                                   self.interpreter.subdir)
-        key = (name, search_dir)
+        key = (prog, search_dir)
         if key in self._found_source_scripts:
             found = self._found_source_scripts[key]
         else:
-            found = dependencies.ExternalProgram(name, search_dir=search_dir)
+            found = dependencies.ExternalProgram(prog, search_dir=search_dir)
             if found.found():
                 self._found_source_scripts[key] = found
             else:
                 m = 'Script or command {!r} not found or not executable'
-                raise InterpreterException(m.format(name))
+                raise InterpreterException(m.format(prog))
         return build.RunScript(found.get_command(), args)
 
-    @permittedKwargs({})
+    def _process_script_args(
-    def add_install_script_method(self, args, kwargs):
+            self, name: str, args: T.List[T.Union[
+                str, mesonlib.File, CustomTargetHolder,
+                CustomTargetIndexHolder, ConfigureFileHolder,
+                ExternalProgramHolder, ExecutableHolder,
+            ]]) -> T.List[str]:
+        script_args = []  # T.List[str]
+        new = False
+        for a in args:
+            a = unholder(a)
+            if isinstance(a, str):
+                script_args.append(a)
+            elif isinstance(a, mesonlib.File):
+                new = True
+                script_args.append(a.rel_to_builddir(self.interpreter.environment.source_dir))
+            elif isinstance(a, (build.BuildTarget, build.CustomTarget, build.CustomTargetIndex)):
+                new = True
+                script_args.extend([os.path.join(a.get_subdir(), o) for o in a.get_outputs()])
+
+                # This feels really hacky, but I'm not sure how else to fix
+                # this without completely rewriting install script handling.
+                # This is complicated by the fact that the install target
+                # depends on all.
+                if isinstance(a, build.CustomTargetIndex):
+                    a.target.build_by_default = True
+                else:
+                    a.build_by_default = True
+            elif isinstance(a, build.ConfigureFile):
+                new = True
+                script_args.append(os.path.join(a.subdir, a.targetname))
+            elif isinstance(a, dependencies.ExternalProgram):
+                script_args.extend(a.command)
+                new = True
+            else:
+                raise InterpreterException(
+                    'Arguments to {} must be strings, Files, CustomTargets, '
+                    'Indexes of CustomTargets, or ConfigureFiles'.format(name))
+        if new:
+            FeatureNew('Calling "{}" with File, CustomTaget, Index of CustomTarget, ConfigureFile, Executable, or ExternalProgram'.format(name), '0.55.0').use(
+                self.interpreter.subproject)
+        return script_args
+
+    @permittedKwargs(set())
+    def add_install_script_method(self, args: 'T.Tuple[T.Union[str, ExecutableHolder], T.Union[str, mesonlib.File, CustomTargetHolder, CustomTargetIndexHolder, ConfigureFileHolder], ...]', kwargs):
         if len(args) < 1:
             raise InterpreterException('add_install_script takes one or more arguments')
-        check_stringlist(args, 'add_install_script args must be strings')
+        script_args = self._process_script_args('add_install_script', args[1:])
-        script = self._find_source_script(args[0], args[1:])
+        script = self._find_source_script(args[0], script_args)
         self.build.install_scripts.append(script)
 
-    @permittedKwargs({})
+    @permittedKwargs(set())
     def add_postconf_script_method(self, args, kwargs):
         if len(args) < 1:
             raise InterpreterException('add_postconf_script takes one or more arguments')
@@ -1925,13 +1973,13 @@ class MesonMain(InterpreterObject):
         script = self._find_source_script(args[0], args[1:])
         self.build.postconf_scripts.append(script)
 
-    @permittedKwargs({})
+    @permittedKwargs(set())
     def add_dist_script_method(self, args, kwargs):
         if len(args) < 1:
             raise InterpreterException('add_dist_script takes one or more arguments')
         if len(args) > 1:
             FeatureNew('Calling "add_dist_script" with multiple arguments', '0.49.0').use(self.interpreter.subproject)
-        check_stringlist(args, 'add_dist_script argument must be a string')
+        check_stringlist(args, 'add_dist_script argumetn must be a string')
         if self.interpreter.subproject != '':
             raise InterpreterException('add_dist_script may not be used in a subproject.')
         script = self._find_source_script(args[0], args[1:])

test cases/common/56 install script/customtarget.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+import argparse
+import os
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    parser.add_argument('dirname')
+    args = parser.parse_args()
+
+    with open(os.path.join(args.dirname, '1.txt'), 'w') as f:
+        f.write('')
+    with open(os.path.join(args.dirname, '2.txt'), 'w') as f:
+        f.write('')
+
+
+if __name__ == "__main__":
+    main()

test cases/common/56 install script/meson.build

@@ -5,3 +5,29 @@ meson.add_install_script('myinstall.py', 'diiba/daaba', 'file.dat')
 meson.add_install_script('myinstall.py', 'this/should', 'also-work.dat')
 
 subdir('src')
+
+meson.add_install_script('myinstall.py', 'dir', afile, '--mode=copy')
+
+data = configuration_data()
+data.set10('foo', true)
+conf = configure_file(
+  configuration : data,
+  output : 'conf.txt'
+)
+
+meson.add_install_script('myinstall.py', 'dir', conf, '--mode=copy')
+
+t = custom_target(
+  'ct',
+  command : [find_program('customtarget.py'), '@OUTDIR@'],
+  output : ['1.txt', '2.txt'],
+)
+
+meson.add_install_script('myinstall.py', 'customtarget', t, '--mode=copy')
+meson.add_install_script('myinstall.py', 'customtargetindex', t[0], '--mode=copy')
+
+meson.add_install_script(exe, 'generated.txt')
+wrap = find_program('wrap.py')
+# Yes, these are getting silly
+meson.add_install_script(wrap, exe, 'wrapped.txt')
+meson.add_install_script(wrap, wrap, exe, 'wrapped2.txt')

test cases/common/56 install script/myinstall.py

@@ -1,12 +1,31 @@
 #!/usr/bin/env python3
 
+import argparse
 import os
-import sys
+import shutil
 
 prefix = os.environ['MESON_INSTALL_DESTDIR_PREFIX']
 
-dirname = os.path.join(prefix, sys.argv[1])
 
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    parser.add_argument('dirname')
+    parser.add_argument('files', nargs='+')
+    parser.add_argument('--mode', action='store', default='create', choices=['create', 'copy'])
+    args = parser.parse_args()
+
+    dirname = os.path.join(prefix, args.dirname)
+    if not os.path.exists(dirname):
         os.makedirs(dirname)
-with open(os.path.join(dirname, sys.argv[2]), 'w') as f:
+
+    if args.mode == 'create':
+        for name in args.files:
+            with open(os.path.join(dirname, name), 'w') as f:
                 f.write('')
+    else:
+        for name in args.files:
+            shutil.copy(name, dirname)
+
+
+if __name__ == "__main__":
+    main()

test cases/common/56 install script/src/exe.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char * argv[]) {
+    if (argc != 2) {
+        fprintf(stderr, "Takes exactly 2 arguments\n");
+        return 1;
+    }
+
+    char * dirname = getenv("MESON_INSTALL_DESTDIR_PREFIX");
+    char * fullname = malloc(strlen(dirname) + 1 + strlen(argv[1]) + 1);
+    strcpy(fullname, dirname);
+    strcat(fullname, "/");
+    strcat(fullname, argv[1]);
+
+    FILE * fp = fopen(fullname, "w");
+    fputs("Some text\n", fp);
+    fclose(fp);
+
+    free(fullname);
+
+    return 0;
+}

test cases/common/56 install script/src/meson.build

@@ -1 +1,5 @@
 meson.add_install_script('myinstall.py', 'this/does', 'something-different.dat')
+
+afile = files('a file.txt')
+
+exe = executable('exe', 'exe.c', install : false, native : true)

test cases/common/56 install script/src/myinstall.py

@@ -7,6 +7,8 @@ prefix = os.environ['MESON_INSTALL_DESTDIR_PREFIX']
 
 dirname = os.path.join(prefix, sys.argv[1])
 
+if not os.path.exists(dirname):
     os.makedirs(dirname)
+
 with open(os.path.join(dirname, sys.argv[2] + '.in'), 'w') as f:
     f.write('')

test cases/common/56 install script/test.json

@@ -4,6 +4,14 @@
     {"type": "pdb", "file": "usr/bin/prog"},
     {"type": "file", "file": "usr/diiba/daaba/file.dat"},
     {"type": "file", "file": "usr/this/should/also-work.dat"},
-    {"type": "file", "file": "usr/this/does/something-different.dat.in"}
+    {"type": "file", "file": "usr/this/does/something-different.dat.in"},
+    {"type": "file", "file": "usr/dir/a file.txt"},
+    {"type": "file", "file": "usr/dir/conf.txt"},
+    {"type": "file", "file": "usr/customtarget/1.txt"},
+    {"type": "file", "file": "usr/customtarget/2.txt"},
+    {"type": "file", "file": "usr/customtargetindex/1.txt"},
+    {"type": "file", "file": "usr/generated.txt"},
+    {"type": "file", "file": "usr/wrapped.txt"},
+    {"type": "file", "file": "usr/wrapped2.txt"}
   ]
 }

test cases/common/56 install script/wrap.py

@@ -0,0 +1,6 @@
+#!/usr/bin/env python3
+
+import subprocess
+import sys
+
+subprocess.run(sys.argv[1:])