latex2html: adding the famous LaTeX to HTML converter (spack#24750)

var/spack/repos/builtin/packages/latex2html/package.py

@@ -0,0 +1,93 @@
+# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+import os
+import platform
+
+from spack import *
+
+
+class Latex2html(AutotoolsPackage):
+    """LaTeX2HTML is a utility that converts LaTeX documents to web pages in HTML."""
+
+    homepage = "https://www.latex2html.org/"
+    url      = "https://github.com/latex2html/latex2html/archive/refs/tags/v2021.tar.gz"
+    git      = "https://github.com/latex2html/latex2html.git"
+
+    maintainers = ['cessenat']
+
+    version('master', branch='master')
+    version('2021', sha256='872fe7a53f91ababaafc964847639e3644f2b9fab3282ea059788e4e18cbba47')
+    version('2017', sha256='28a5d4b8f14b1f95928da281b6332559bcd83349ba439b2fa43655b2e21c83ab')
+
+    variant('svg', default=True, description='Enable SVG images')
+    variant('png', default=True, description='Enable PNG images')
+    variant('gif', default=True, description='Enable GIF images')
+
+    depends_on('ghostscript', type=('build', 'run'))
+    depends_on('perl', type=('build', 'run'))
+    # Provides pdfcrop scheme=full
+    depends_on('texlive', type=('build', 'run'))
+
+    depends_on('netpbm', type=('build', 'run'))
+    # Provides pdftocairo
+    depends_on('poppler+glib', type=('build', 'run'), when='+svg')
+
+    # A copy of texlive function as long as it does not provide the
+    # bin env to dependent package:
+    def tex_arch(self):
+        tex_arch = '{0}-{1}'.format(platform.machine(),
+                                    platform.system().lower())
+        return tex_arch
+
+    def configure_args(self):
+        spec = self.spec
+        args = ['--with-perl={0}'.format(spec['perl'].command.path)]
+        args.extend(self.enable_or_disable('png'))
+        args.extend(self.enable_or_disable('gif'))
+        args.extend(self.enable_or_disable('svg'))
+
+        # Since packages do not always provide a proper dependent_build_environment,
+        # one needs to guess where the bins are since latex2html configure wants to
+        # hard set the bins location once for all:
+        for p in ['gs', 'ps2pdf']:
+            exe = join_path(spec['ghostscript'].prefix.bin, p)
+            if os.path.exists(exe):
+                args.append('--with-{0}={1}'.format(p, exe))
+        pnms = ['pnmcrop', 'pnmflip', 'ppmquant', 'pnmfile', 'pnmcat', 'pbmmake',
+                'ppmtogif', 'pnmtopng', 'ppmtojpeg', 'pnmcut', 'pnmpad', 'pnmrotate',
+                'pnmscale', 'giftopnm', 'jpegtopnm', 'pngtopnm', 'tifftopnm',
+                'anytopnm', 'bmptoppm', 'pcxtoppm', 'sgitopnm', 'xbmtopbm', 'xwdtopnm']
+        for p in pnms:
+            exe = join_path(spec['netpbm'].prefix.bin, p)
+            if os.path.exists(exe):
+                args.append('--with-{0}={1}'.format(p, exe))
+
+        # PR #24102 at https://github.com/spack/spack/pull/24102
+        # should make this useless ; but at least it lets us know which are the
+        # texlive bins that latex2html may use.
+        lats = ['pdfcrop', 'tex', 'initex', 'latex', 'dvips', 'dvipng', 'pdflatex',
+                'lualatex', 'dvilualatex', 'kpsewhich', 'mktexlsr']
+        for p in lats:
+            exe = join_path(spec['texlive'].prefix.bin, self.tex_arch(), p)
+            if os.path.exists(exe):
+                args.append('--with-{0}={1}'.format(p, exe))
+            else:
+                # This should be the only needed code if texlive where
+                # to set its proper dependent_build_environment
+                exe = which(p)
+                if exe:
+                    args.append('--with-{0}={1}'.format(p, str(exe)))
+        if '+svg' in spec:
+            p = 'pdftocairo'
+            exe = join_path(spec['poppler'].prefix.bin, p)
+            if os.path.exists(exe):
+                args.append('--with-{0}={1}'.format(p, exe))
+            else:
+                exe = which(p)
+                if exe:
+                    args.append('--with-{0}={1}'.format(p, str(exe)))
+
+        return args