1 files changed, 52 insertions, 0 deletions
diff --git a/pdfcrop.bzl b/pdfcrop.bzl
new file mode 100644
index 0000000..b463f98
--- /dev/null
+++ b/pdfcrop.bzl
@@ -0,0 +1,52 @@
+def _pdf_crop_impl(ctx):
+    texlive_path = ctx.var.get("TEXLIVE_FULL_DIR", None)
+    if texlive_path == None:
+        fail("Please run setup_texlive.sh to set TEXLIVE_FULL_DIR.")
+    uncropped = ctx.attr.uncropped.files.to_list()[0]
+    ctx.actions.run(
+        mnemonic = "PDFCrop",
+        executable = "bash",
+        use_default_shell_env = True,
+        arguments = [
+            ctx.files._pdf_crop_wrapper[0].path,
+            ctx.files._pdf_crop_script[0].path,
+            texlive_path,
+            uncropped.path,
+            ctx.outputs.output.path,
+        ],
+        inputs = depset(
+            direct = (ctx.files._pdf_crop_script + ctx.files._pdf_crop_wrapper +
+                      [uncropped]),
+        ),
+        outputs = [ctx.outputs.output],
+    )
+
+_pdf_crop = rule(
+    attrs = {
+        "uncropped": attr.label(
+            allow_files = True,
+        ),
+        "output": attr.output(),
+        "_pdf_crop_wrapper": attr.label(
+            allow_files = True,
+            default = "@bazel_latex//:pdfcrop.sh",
+        ),
+        "_pdf_crop_script": attr.label(
+            allow_files = True,
+            default = "@pdfcrop//:pdfcrop.pl",
+        ),
+    },
+    implementation = _pdf_crop_impl,
+)
+
+def pdfcrop(name = "pdfcrop", visibility = [], uncropped = []):
+    for path in uncropped:
+        if not path.endswith(".pdf"):
+            fail
+    for i, path in enumerate(uncropped):
+        _pdf_crop(
+            name = path[:-4] + "-cropper",
+            uncropped = path,
+            output = path[:-4] + "-crop.pdf",
+            visibility = visibility,
+        )