1 files changed, 0 insertions, 101 deletions
diff --git a/pyproject_requirements_txt.py b/pyproject_requirements_txt.py
deleted file mode 100644
index 5ff1f26..0000000
--- a/pyproject_requirements_txt.py
+++ /dev/null
@@ -1,101 +0,0 @@
-"""Best-effort parser for requirements.txt files"""
-
-import urllib.parse
-from pathlib import Path
-import sys
-import os
-import re
-
-# `#` starts a comment only at end of line and after whitespace
-COMMENT_RE = re.compile(r'(^|\s+)#.*$')
-
-# Assume URLs start with a scheme; don't look for "egg=" URLs otherwise
-URL_START_RE = re.compile(r'^[-_+a-zA-Z0-9]+://')
-
-ENV_VAR_RE = re.compile(r'(?P<var>\$\{(?P<name>[A-Z0-9_]+)\})')
-PKGNAME_RE = re.compile(r'^[-_a-zA-Z0-9]+')
-
-# The requirements.txt format evolved rather organically; expect weirdness.
-
-def convert_requirements_txt(lines, path:Path = None):
-    """Convert lines of a requirements file to PEP 440-style requirement strs
-
-    This does NOT handle all of requirements.txt features (only pip can do
-    that), but tries its best.
-
-    The resulting requirements might not actually be valid (either because
-    they're wrong in the file, or because we missed a special case).
-
-    path is the path to the requirements.txt file, used for options like `-r`.
-    """
-    requirements = []
-    lines = combine_logical_lines(lines)
-    lines = strip_comments(lines)
-    lines = expand_env_vars(lines)
-    if path:
-        filename = path.name
-    else:
-        filename = '<requirements file>'
-    for line in lines:
-        if URL_START_RE.match(line):
-            # Handle URLs with "egg=..." fragments
-            # see https://pip.pypa.io/en/stable/cli/pip_install/#vcs-support
-            parsed_url = urllib.parse.urlparse(line)
-            parsed_fragment = urllib.parse.parse_qs(parsed_url.fragment)
-            if 'egg' in parsed_fragment:
-                # Prepend the package name to the URL.
-                match = PKGNAME_RE.match(parsed_fragment['egg'][0])
-                if match:
-                    pkg_name = match[0]
-                    requirements.append(f'{pkg_name}@{line}')
-                    continue
-            # If that didn't work, pass the line on;
-            # the caller will deal with invalid requirements
-            requirements.append(line)
-        elif line.startswith('-r'):
-            recursed_path = line[2:].strip()
-            if path:
-                recursed_path = path.parent / recursed_path
-            recursed_path = Path(recursed_path)
-            with recursed_path.open() as f:
-                requirements.extend(convert_requirements_txt(f, recursed_path))
-        elif line.startswith('-'):
-            raise ValueError(f'{filename}: unsupported requirements file option: {line}')
-        else:
-            requirements.append(line)
-    return requirements
-
-def combine_logical_lines(lines):
-    """Combine logical lines together (backslash line-continuation)"""
-    pieces = []
-    for line in lines:
-        line = line.rstrip('\n')
-        # Whole-line comments *only* are removed before line-contionuation
-        if COMMENT_RE.match(line):
-            continue
-        if line.endswith('\\'):
-            pieces.append(line[:-1])
-        else:
-            # trailing whitespace is only removed from full logical lines
-            pieces.append(line.rstrip())
-            yield ''.join(pieces)
-            pieces = []
-    yield ''.join(pieces)
-
-
-def strip_comments(lines):
-    for line in lines:
-        line, *rest = COMMENT_RE.split(line, maxsplit=1)
-        line = line.strip()
-        if line:
-            yield line
-
-
-def expand_env_vars(lines):
-    def repl(match):
-        value = os.getenv(match['name'])
-        if value is None:
-            return match['var']
-        return value
-    for line in lines:
-        yield ENV_VAR_RE.sub(repl, line)