Add Beamer Theme Support for LaTeX Scanner

CHANGES.txt

@@ -15,10 +15,18 @@ RELEASE  VERSION/DATE TO BE FILLED IN LATER
   From Joseph Brill:
     - Added error handling when creating MS VC detection debug log file specified by
       SCONS_MSCOMMON_DEBUG
+
+  From Alex James:
+    - On Darwin, PermissionErrors are now handled while trying to access
+      /etc/paths.d. This may occur if SCons is invoked in a sandboxed
+      environment (such as Nix).
 
   From Dillan Mills:
     - Fix support for short options (`-x`).
 
+  From Keith F Prussing:
+    - Added support for tracking beamer themes in the LaTeX scanner.
+
   From Mats Wichmann:
     - PackageVariable now does what the documentation always said it does
       if the variable is used on the command line with one of the enabling
@@ -61,11 +69,6 @@ RELEASE  VERSION/DATE TO BE FILLED IN LATER
       a while loop to pull test info from a list of tests and then delete
       the test, structure the test data as a list of tuples and iterate it.
 
-  From Alex James:
-    - On Darwin, PermissionErrors are now handled while trying to access
-      /etc/paths.d. This may occur if SCons is invoked in a sandboxed
-      environment (such as Nix).
-
 
 RELEASE 4.8.1 -  Tue, 03 Sep 2024 17:22:20 -0700
 

RELEASE.txt

@@ -33,6 +33,7 @@ CHANGED/ENHANCED EXISTING FUNCTIONALITY
   keyword arguments to Builder calls (or manually, through the
   undocumented Override method), were modified not to "leak" on item deletion.
   The item will now not be deleted from the base environment.
+- Added support for tracking beamer themes in the LaTeX scanner.
 
 FIXES
 -----

SCons/Scanner/LaTeX.py

@@ -169,6 +169,11 @@ class LaTeX(ScannerBase):
                      'addsectionbib': 'BIBINPUTS',
                      'makeindex': 'INDEXSTYLE',
                      'usepackage': 'TEXINPUTS',
+                     'usetheme': 'TEXINPUTS',
+                     'usecolortheme': 'TEXINPUTS',
+                     'usefonttheme': 'TEXINPUTS',
+                     'useinnertheme': 'TEXINPUTS',
+                     'useoutertheme': 'TEXINPUTS',
                      'lstinputlisting': 'TEXINPUTS'}
     env_variables = SCons.Util.unique(list(keyword_paths.values()))
     two_arg_commands = ['import', 'subimport',
@@ -193,6 +198,7 @@ def __init__(self, name, suffixes, graphics_extensions, *args, **kwargs) -> None
               | addglobalbib
               | addsectionbib
               | usepackage
+              | use(?:|color|font|inner|outer)theme(?:\s*\[[^\]]+\])?
               )
                   \s*{([^}]*)}       # first arg
               (?: \s*{([^}]*)} )?    # maybe another arg
@@ -362,6 +368,9 @@ def scan(self, node, subdir: str='.'):
                 if inc_type in self.two_arg_commands:
                     inc_subdir = os.path.join(subdir, include[1])
                     inc_list = include[2].split(',')
+                elif re.match('use(|color|font|inner|outer)theme', inc_type):
+                    inc_list = [re.sub('use', 'beamer', inc_type) + _ + '.sty' for _ in
+                                include[1].split(',')]
                 else:
                     inc_list = include[1].split(',')
                 for inc in inc_list:
@@ -411,7 +420,7 @@ def scan_recurse(self, node, path=()):
             if n is None:
                 # Do not bother with 'usepackage' warnings, as they most
                 # likely refer to system-level files
-                if inc_type != 'usepackage':
+                if inc_type != 'usepackage' or re.match("use(|color|font|inner|outer)theme", inc_type):
                     SCons.Warnings.warn(
                         SCons.Warnings.DependencyWarning,
                         "No dependency generated for file: %s "

SCons/Scanner/LaTeXTests.py

@@ -63,6 +63,18 @@
 \only<2>{\includegraphics{inc7.png}}
 """)
 
+test.write('test5.latex',r"""
+\usetheme{scons}
+""")
+test.write('beamerthemescons.sty',r"""
+\usecolortheme[option]{scons}
+\usefonttheme{scons}
+\useinnertheme{scons}
+\useoutertheme{scons}
+""")
+for theme in ('color', 'font', 'inner', 'outer'):
+    test.write('beamer' + theme + 'themescons.sty', "\n")
+
 test.subdir('subdir')
 
 test.write('inc1.tex',"\n")
@@ -167,6 +179,16 @@ def runTest(self) -> None:
          files = ['inc1.tex', 'inc2.tex', 'inc5.xyz', 'inc7.png']
          deps_match(self, deps, files)
 
+class LaTeXScannerTestCase5(unittest.TestCase):
+     def runTest(self) -> None:
+         env = DummyEnvironment(TEXINPUTS=[test.workpath("subdir")],LATEXSUFFIXES = [".tex", ".ltx", ".latex"])
+         s = SCons.Scanner.LaTeX.LaTeXScanner()
+         path = s.path(env)
+         deps = s(env.File('test5.latex'), env, path)
+         files = ['beamer' + _ + 'themescons.sty' for _ in
+                  ('color', 'font', 'inner', 'outer', '')]
+         deps_match(self, deps, files)
+
 if __name__ == "__main__":
     unittest.main()