More robust env.sh | Fix conda activate if in subshell

scripts/replace-content.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+
+# Replace text in a file given a key identifying a block to replace.
+# If the file doesn't exist, create it.
+#
+# args
+# $1 - file to replace text in
+# $2 - key used to find block of text to replace
+# $3 - text to fill in block that is replaced
+
+import re
+import sys
+
+def CY_INITIALIZE_RE_BLOCK(k):
+    return (
+        r"^# >>> " + f"{k}" + r" initialize >>>(?:\n|\r\n)"
+        r"([\s\S]*?)"
+        r"# <<< " + f"{k}" + r" initialize <<<(?:\n|\r\n)?"
+    )
+
+def CY_INITIALIZE_START_TOKEN(k):
+    return "# >>> " + f"{k}" + " initialize >>>"
+
+def CY_INITIALIZE_END_TOKEN(k):
+    return "# <<< " + f"{k}" + " initialize <<<"
+
+# ------------------------------
+
+try:
+    with open(sys.argv[1]) as fh:
+        fh_content = fh.read()
+except FileNotFoundError:
+    fh_content = ""
+except:
+    raise
+
+initialize_comment_key = sys.argv[2]
+inner_contents = CY_INITIALIZE_START_TOKEN(initialize_comment_key) + "\n" + sys.argv[3] + "\n" + CY_INITIALIZE_END_TOKEN(initialize_comment_key) + "\n"
+
+# ------------------------------
+
+replace_str = "__CY_REPLACE_ME_123__"
+fh_content = re.sub(
+    CY_INITIALIZE_RE_BLOCK(initialize_comment_key),
+    replace_str,
+    fh_content,
+    flags=re.MULTILINE,
+)
+# TODO: maybe remove all but last of replace_str, if there's more than one occurrence
+fh_content = fh_content.replace(replace_str, inner_contents)
+
+if CY_INITIALIZE_START_TOKEN(initialize_comment_key) not in fh_content:
+    fh_content += "\n%s\n" % inner_contents
+
+with open(sys.argv[1], "w") as fh:
+    fh.write(fh_content)