Fixes for better portability to macOS

just_sh/convert.py

@@ -273,6 +273,9 @@ def expression_to_string(expression: ExpressionType, depth: int = 0) -> str:
   elif type python3 > /dev/null 2>&1; then
     python3 -c 'from hashlib import sha256; import sys; print(sha256(sys.stdin.buffer.read()).hexdigest())' \
       < "${1}"
+  elif type python > /dev/null 2>&1; then
+    python -c 'from hashlib import sha256; import sys; print sha256(sys.stdin.read()).hexdigest()' \
+      < "${1}"
   else
     echo_error "No sha256sum binary found"
     exit 1
@@ -285,6 +288,9 @@ def expression_to_string(expression: ExpressionType, depth: int = 0) -> str:
   elif type python3 > /dev/null 2>&1; then
     printf "%s" "${1}" | \
       python3 -c 'from hashlib import sha256; import sys; print(sha256(sys.stdin.buffer.read()).hexdigest())'
+  elif type python > /dev/null 2>&1; then
+    printf "%s" "${1}" | \
+      python3 -c 'from hashlib import sha256; import sys; print sha256(sys.stdin.read()).hexdigest()'
   else
     echo_error "No sha256sum binary found"
     exit 1
@@ -1463,6 +1469,45 @@ def helper_functions() -> str:
         return f"""
 {header_comment("Helper functions")}
 
+# Sane, portable echo that doesn't escape characters like "\\n" behind your back
+echo() {{
+  if [ "${{#}}" -gt 0 ]; then
+    printf "%s\\n" "${{@}}"
+  else
+    printf "\\n"
+  fi
+}}
+
+# realpath is a GNU coreutils extension
+realpath() {{
+  # The methods to replicate it get increasingly error-prone
+  # TODO: improve
+  if type -P realpath > /dev/null 2>&1; then
+    "$(type -P realpath)" "${{1}}"
+  elif type python3 > /dev/null 2>&1; then
+    python3 -c 'import os.path, sys; print(os.path.realpath(sys.argv[1]))' "${{1}}"
+  elif type python > /dev/null 2>&1; then
+    python -c 'import os.path, sys; print os.path.realpath(sys.argv[1])' "${{1}}"
+  elif [ -f "${{1}}" ] && ! [ -z "$(dirname "${{1}}")" ]; then
+    # We assume the directory exists. For our uses, it always does
+    echo "$(
+      cd "$(dirname "${{1}}")";
+      pwd -P
+    )/$(
+      basename "${{1}}"
+    )"
+  elif [ -f "${{1}}" ]; then
+    pwd -P
+  elif [ -d "${{1}}" ]; then
+  (
+    cd "${{1}}"
+    pwd -P
+  )
+  else
+    echo "${{1}}"
+  fi
+}}
+
 echo_error() {{
   echo "${{RED}}error${{NOCOLOR}}: ${{BOLD}}${{1}}${{NOCOLOR}}" >&2
 }}
@@ -1480,15 +1525,6 @@ def helper_functions() -> str:
 echo_recipe_line() {{
   echo "${{BOLD}}${{1}}${{NOCOLOR}}" >&2
 }}
-
-# Sane, portable echo that doesn't escape characters like "\\n" behind your back
-echo() {{
-  if [ "${{#}}" -gt 0 ]; then
-    printf "%s\\n" "${{@}}"
-  else
-    printf "\\n"
-  fi
-}}
             
 set_var() {{
   export "VAR_${{1}}=${{2}}"

test/test.py

@@ -415,7 +415,7 @@ def run_justfile(args: Iterable[str]) -> None:
   echo "{{ if home_dir == home_dir_2 { "$(echo equal)" } else { "unequal!" } }}"
   echo "{{env_var_or_default('ThIs_DoEs_NoT_eXiSt', 'FAKE!!!')}}"
   echo "{{invocation_directory()}}"
-  echo "{{justfile_directory()}}+{{justfile()}} = {{justfile_directory() / justfile()}}"
+  echo "{{justfile_directory()}} + {{justfile()}} = {{justfile_directory() / justfile()}}"
   echo "Alternatively, {{justfile_directory() + justfile()}}"
   echo {{quote("I'd've should've quoted this!")}}
   echo {{uppercase(quote("I'd've should've quoted this!"))}}
@@ -1145,6 +1145,8 @@ def test_evalute_without_quoting() -> None:
     (re.compile(rb" +"), rb" "),
     (re.compile(rb'"'), rb"'"),
     (re.compile(rb"tmp\.[a-zA-Z0-9]+"), rb"tmp"),
+    (re.compile(rb"/var/folder[^\s]+"), rb"tmp"),  # macOS temp directories
+    (re.compile(rb"/[^\s]*tmp[^\s]+"), rb"tmp"),
     (re.compile(rb"\d{1,2}:\d{1,2}"), rb"12:00"),  # Normalize times
     (re.compile(rb"\nDid you mean[^\n]*"), rb""),
     (re.compile(rb"which wasn't expected"), rb"that wasn't expected"),