1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
"""
Definition of Ghostscript error codes
"""
#
# This file is part of python-ghostscript.
# Copyright (C) 2010-2018 by Hartmut Goebel
#
# Based on iapi.h which is
# Copyright (C) 1989, 1995, 1998, 1999 Aladdin Enterprises. All rights reserved.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
__author__ = "Hartmut Goebel <h.goebel@crazy-compilers.com>"
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel <h.goebel@crazy-compilers.com>"
__licence__ = "GNU General Public License version 3 (GPL v3)"
#
# A procedure that may return an error always returns
# a non-negative value (zero, unless otherwise noted) for success,
# or negative for failure.
# We use ints rather than an enum to avoid a lot of casting.
#
# ------ PostScript Level 1 errors ------
e_unknownerror = -1 # unknown error
e_dictfull = -2
e_dictstackoverflow = -3
e_dictstackunderflow = -4
e_execstackoverflow = -5
e_interrupt = -6
# We also need to define gs_error_interrupt, for gpcheck.h
gs_error_interrupt = e_interrupt
e_invalidaccess = -7
e_invalidexit = -8
e_invalidfileaccess = -9
e_invalidfont = -10
e_invalidrestore = -11
e_ioerror = -12
e_limitcheck = -13
e_nocurrentpoint = -14
e_rangecheck = -15
e_stackoverflow = -16
e_stackunderflow = -17
e_syntaxerror = -18
e_timeout = -19
e_typecheck = -20
e_undefined = -21
e_undefinedfilename = -22
e_undefinedresult = -23
e_unmatchedmark = -24
e_VMerror = -25
LEVEL1_ERROR_NAMES = ["unknownerror", "dictfull", "dictstackoverflow",
"dictstackunderflow", "execstackoverflow",
"interrupt", "invalidaccess", "invalidexit",
"invalidfileaccess", "invalidfont",
"invalidrestore", "ioerror", "limitcheck",
"nocurrentpoint", "rangecheck", "stackoverflow",
"stackunderflow", "syntaxerror", "timeout",
"typecheck", "undefined", "undefinedfilename",
"undefinedresult", "unmatchedmark", "VMerror"]
# ------ Additional Level 2 and DPS errors ------
e_configurationerror = -26
e_invalidcontext = -27
e_undefinedresource = -28
e_unregistered = -29
# invalidid is for the NeXT DPS extension.
e_invalidid = -30
LEVEL2_ERROR_NAMES = ["configurationerror", "invalidcontext",
"undefinedresource", "unregistered",
"invalidid"]
ERROR_NAMES = LEVEL1_ERROR_NAMES + LEVEL2_ERROR_NAMES
_PSEUDO_ERRORS = ['Fatal', 'Quit', 'InterpreterExit', 'RemapColor',
'ExecStackUnderflow', 'VMreclaim', 'NeedInput',
'NeedStdin', 'NeedStdout', 'NeedStderr', 'Info']
def error2name(ecode):
if ecode <= e_Fatal:
return _PSEUDO_ERRORS[-ecode-100]
else:
return ERROR_NAMES[-ecode-1]
# ------ Pseudo-errors used internally ------
#
# Internal code for a fatal error.
# gs_interpret also returns this for a .quit with a positive exit code.
#
e_Fatal = -100
#
# Internal code for the .quit operator.
# The real quit code is an integer on the operand stack.
# gs_interpret returns this only for a .quit with a zero exit code.
#
e_Quit = -101
#
# Internal code for a normal exit from the interpreter.
# Do not use outside of interp.c.
#
e_InterpreterExit = -102
#
# Internal code that indicates that a procedure has been stored in the
# remap_proc of the graphics state, and should be called before retrying
# the current token. This is used for color remapping involving a call
# back into the interpreter -- inelegant, but effective.
#
e_RemapColor = -103
#
# Internal code to indicate we have underflowed the top block
# of the e-stack.
#
e_ExecStackUnderflow = -104
#
# Internal code for the vmreclaim operator with a positive operand.
# We need to handle this as an error because otherwise the interpreter
# won't reload enough of its state when the operator returns.
#
e_VMreclaim = -105
#
# Internal code for requesting more input from run_string.
#
e_NeedInput = -106
#
# Internal code for stdin callout.
#
e_NeedStdin = -107
#
# Internal code for stdout callout.
#
e_NeedStdout = -108
#
# Internal code for stderr callout.
#
e_NeedStderr = -109
#
# Internal code for a normal exit when usage info is displayed.
# This allows Window versions of Ghostscript to pause until
# the message can be read.
#
e_Info = -110
#
# Define which error codes require re-executing the current object.
#
def ERROR_IS_INTERRUPT(ecode):
return ecode == e_interrupt or ecode == e_timeout
if __name__ == '__main__':
print(error2name(e_unknownerror) == "unknownerror")
print(error2name(e_VMerror) == "VMerror")
print(error2name(e_invalidid) == "invalidid")
print(error2name(e_VMreclaim) == "VMreclaim")
|
