| __all__ = ["Mark", "YAMLError", "MarkedYAMLError"] |
| |
| |
| class Mark: |
| def __init__(self, name, index, line, column, buffer, pointer): |
| self.name = name |
| self.index = index |
| self.line = line |
| self.column = column |
| self.buffer = buffer |
| self.pointer = pointer |
| |
| def get_snippet(self, indent=4, max_length=75): |
| if self.buffer is None: |
| return None |
| head = "" |
| start = self.pointer |
| while start > 0 and self.buffer[start - 1] not in "\0\r\n\x85\u2028\u2029": |
| start -= 1 |
| if self.pointer - start > max_length / 2 - 1: |
| head = " ... " |
| start += 5 |
| break |
| tail = "" |
| end = self.pointer |
| while ( |
| end < len(self.buffer) and self.buffer[end] not in "\0\r\n\x85\u2028\u2029" |
| ): |
| end += 1 |
| if end - self.pointer > max_length / 2 - 1: |
| tail = " ... " |
| end -= 5 |
| break |
| snippet = self.buffer[start:end] |
| return ( |
| " " * indent |
| + head |
| + snippet |
| + tail |
| + "\n" |
| + " " * (indent + self.pointer - start + len(head)) |
| + "^" |
| ) |
| |
| def __str__(self): |
| snippet = self.get_snippet() |
| where = ' in "%s", line %d, column %d' % ( |
| self.name, |
| self.line + 1, |
| self.column + 1, |
| ) |
| if snippet is not None: |
| where += ":\n" + snippet |
| return where |
| |
| |
| class YAMLError(Exception): |
| pass |
| |
| |
| class MarkedYAMLError(YAMLError): |
| def __init__( |
| self, |
| context=None, |
| context_mark=None, |
| problem=None, |
| problem_mark=None, |
| note=None, |
| ): |
| self.context = context |
| self.context_mark = context_mark |
| self.problem = problem |
| self.problem_mark = problem_mark |
| self.note = note |
| |
| def __str__(self): |
| lines = [] |
| if self.context is not None: |
| lines.append(self.context) |
| if self.context_mark is not None and ( |
| self.problem is None |
| or self.problem_mark is None |
| or self.context_mark.name != self.problem_mark.name |
| or self.context_mark.line != self.problem_mark.line |
| or self.context_mark.column != self.problem_mark.column |
| ): |
| lines.append(str(self.context_mark)) |
| if self.problem is not None: |
| lines.append(self.problem) |
| if self.problem_mark is not None: |
| lines.append(str(self.problem_mark)) |
| if self.note is not None: |
| lines.append(self.note) |
| return "\n".join(lines) |
