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feat(docs): Add troubleshooting guide for CairoSVG crash
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| import inspect | ||
| import os | ||
| import shutil | ||
| import subprocess | ||
| from ctypes import util | ||
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| class CustomPopen(subprocess.Popen): | ||
|
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| def __init__(self, *args, **kwargs): | ||
| print(f"Subprocess command:\n {' '.join(args[0])}") | ||
| super().__init__(*args, **kwargs) | ||
|
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||
| def communicate(self, *args, **kwargs): | ||
| out, _ = super().communicate(*args, **kwargs) | ||
| out = out.rstrip() | ||
| print("Subprocess output:") | ||
| if out: | ||
| print(f" {os.fsdecode(out)}") | ||
| else: | ||
| print(f" Output is empty") | ||
| return out, _ | ||
|
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||
| def __getattribute__(self, name_): | ||
| att = super().__getattribute__(name_) | ||
| if name_ == "stdout" and att is not None: | ||
| att.read = self.read_wrapper(att.read) | ||
| return att | ||
|
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| @staticmethod | ||
| def read_wrapper(func): | ||
|
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| if func.__name__ == "wrapper": | ||
| return func | ||
|
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| def wrapper(*args, **kwargs): | ||
| output = func(*args, **kwargs) | ||
| print("Subprocess output:") | ||
| for line_ in os.fsdecode(output).split("\n"): | ||
| print(line_) | ||
| return output | ||
|
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| return wrapper | ||
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| subprocess.Popen = CustomPopen | ||
|
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| print("ctypes.util script with the find_library:") | ||
| print(inspect.getsourcefile(util.find_library), end="\n\n") | ||
|
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| print("find_library function:") | ||
| func_lines = list(map(str.rstrip, inspect.getsourcelines(util.find_library)[0])) | ||
| indent = len(func_lines[0]) - len(func_lines[0].lstrip()) | ||
| for line in func_lines: | ||
| print(line.replace(" " * indent, "", 1)) | ||
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| library_names = ("cairo-2", "cairo", "libcairo-2") | ||
| filenames = ("libcairo.so.2", "libcairo.2.dylib", "libcairo-2.dll") | ||
| c_compiler = shutil.which("gcc") or shutil.which("cc") | ||
| ld_env = os.environ.get("LD_LIBRARY_PATH") | ||
| first_found = "" | ||
|
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| print("\nLD_LIBRARY_PATH =", ld_env, end="\n\n") | ||
|
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| for name in library_names: | ||
| if hasattr(util, "_findSoname_ldconfig"): | ||
| result = util._findSoname_ldconfig(name) | ||
| print(f"_findSoname_ldconfig({name}) ->", result) | ||
| if result: | ||
| print(f"Found {result}") | ||
| if not first_found: | ||
| first_found = result | ||
| print("---") | ||
| if c_compiler and hasattr(util, "_findLib_gcc"): | ||
| result = util._findLib_gcc(name) | ||
| print(f"_findLib_gcc({name}) ->", result) | ||
| if result and hasattr(util, "_get_soname"): | ||
| result = util._get_soname(result) | ||
| if result: | ||
| print(f"Found {result}") | ||
| if not first_found: | ||
| first_found = result | ||
| print("---") | ||
| if hasattr(util, "_findLib_ld"): | ||
| result = util._findLib_ld(name) | ||
| print(f"_findLib_ld({name}) ->", result) | ||
| if result and hasattr(util, "_get_soname"): | ||
| result = util._get_soname(result) | ||
| if result: | ||
| print(f"Found {result}") | ||
| if not first_found: | ||
| first_found = result | ||
| print("---") | ||
| if hasattr(util, "_findLib_crle"): | ||
| result = util._findLib_crle(name, False) | ||
| print(f"_findLib_crle({name}) ->", result) | ||
| if result and hasattr(util, "_get_soname"): | ||
| result = util._get_soname(result) | ||
| if result: | ||
| print(f"Found {result}") | ||
| if not first_found: | ||
| first_found = result | ||
| print("---") | ||
|
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| if first_found: | ||
| filenames = (first_found,) + filenames | ||
|
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| print(f"The path is {first_found or 'not found'}") | ||
| print("List of files that FFI will try to load:") | ||
| for filename in filenames: | ||
| print("-", filename) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| import os | ||
| from ctypes.macholib import dyld | ||
| from itertools import chain | ||
|
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| library_names = ("cairo-2", "cairo", "libcairo-2") | ||
| filenames = ("libcairo.so.2", "libcairo.2.dylib", "libcairo-2.dll") | ||
| first_found = "" | ||
| names = [] | ||
|
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| for name in library_names: | ||
| names += [ | ||
| "lib%s.dylib" % name, | ||
| "%s.dylib" % name, | ||
| "%s.framework/%s" % (name, name), | ||
| ] | ||
|
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| for name in names: | ||
| for path in dyld.dyld_image_suffix_search( | ||
| chain( | ||
| dyld.dyld_override_search(name), | ||
| dyld.dyld_executable_path_search(name), | ||
| dyld.dyld_default_search(name), | ||
| ) | ||
| ): | ||
| if os.path.isfile(path): | ||
| print(f"Found: {path}") | ||
| if not first_found: | ||
| first_found = path | ||
| continue | ||
|
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| try: | ||
| if dyld._dyld_shared_cache_contains_path(path): | ||
| print(f"Found: {path}") | ||
| if not first_found: | ||
| first_found = path | ||
| continue | ||
| except NotImplementedError: | ||
| pass | ||
|
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| print(f"Doesn't exist: {path}") | ||
| print("---") | ||
|
|
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| if first_found: | ||
| filenames = (first_found,) + filenames | ||
|
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| print(f"The path is {first_found or 'not found'}") | ||
| print("List of files that FFI will try to load:") | ||
| for filename in filenames: | ||
| print("-", filename) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| import os | ||
|
|
||
| library_names = ("cairo-2", "cairo", "libcairo-2") | ||
| filenames = ("libcairo.so.2", "libcairo.2.dylib", "libcairo-2.dll") | ||
| first_found = "" | ||
| names = [] | ||
|
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| for name in library_names: | ||
| if name.lower().endswith(".dll"): | ||
| names += [name] | ||
| else: | ||
| names += [name, name + ".dll"] | ||
|
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| for name in names: | ||
| for path in os.environ["PATH"].split(os.pathsep): | ||
| resolved_path = os.path.join(path, name) | ||
| if os.path.exists(resolved_path): | ||
| print(f"Found: {resolved_path}") | ||
| if not first_found: | ||
| first_found = resolved_path | ||
| continue | ||
| print(f"Doesn't exist: {resolved_path}") | ||
| print("---") | ||
|
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| if first_found: | ||
| filenames = (first_found,) + filenames | ||
|
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| print(f"The path is {first_found or 'not found'}") | ||
| print("List of files that FFI will try to load:") | ||
| for filename in filenames: | ||
| print("-", filename) |