2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
25 #include "std-vector.hh"
26 #include "international.hh"
30 /** We have several different loglevels, each with its own message function(s):
31 ERROR: error, non_fatal_error, programming_error
33 BASIC_PROGRESS: success/...
34 PROGRESS: progress_indication
37 All these functions check whether the corresponding loglevel bit is set
38 and print the message only if that's the case
41 /* Define the loglevel (default is INFO) */
42 int loglevel = LOGLEVEL_INFO;
43 bool warning_as_error = false;
46 is_loglevel (int level)
48 // Check the bitmask containing the loglevel
49 return (loglevel & level);
53 set_loglevel (int level)
56 debug_output (_f ("Log level set to %d\n", loglevel));
60 set_loglevel (string level)
62 /* Convert the loglevel string to lower-case, so we allow
63 both upper- and lower-case loglevels */
64 std::transform (level.begin (), level.end (), level.begin (), ::tolower);
66 /* Compare just the first few characters, so the loglevels
68 if (level.compare (0, 5, "debug") == 0) // debug
69 set_loglevel (LOGLEVEL_DEBUG);
70 else if (level.compare (0, 4, "info") == 0) // info
71 set_loglevel (LOGLEVEL_INFO);
72 else if (level.compare (0, 4, "prog") == 0) // progress
73 set_loglevel (LOGLEVEL_PROGRESS);
74 else if (level.compare (0, 5, "basic") == 0) // basic progress
75 set_loglevel (LOGLEVEL_BASIC);
76 else if (level.compare (0, 4, "warn") == 0) // warning
77 set_loglevel (LOGLEVEL_WARN);
78 else if (level.compare (0, 3, "err") == 0) // error
79 set_loglevel (LOGLEVEL_ERROR);
80 else if (level.compare (0, 4, "none") == 0) // none
81 set_loglevel (LOGLEVEL_NONE);
85 if (sscanf (level.c_str (), "%d", &l))
89 non_fatal_error (_f ("unknown log level `%s', using default (INFO)",
91 set_loglevel (LOGLEVEL_INFO);
97 * Register a warning string to be expected and the output suppressed.
98 * If the warning is encountered, it will be removed from the list of
99 * expected warnings again.
101 vector<string> expected_warnings;
102 void expect_warning (string msg)
104 expected_warnings.push_back (msg);
107 void check_expected_warnings ()
109 if (expected_warnings.size () > 0)
111 /* Some expected warning was not triggered, so print out a warning. */
112 string msg = _f ("%d expected warning(s) not encountered: ",
113 expected_warnings.size ());
114 for (vsize i = 0; i < expected_warnings.size (); i++)
115 msg += "\n " + expected_warnings[i];
119 expected_warnings.clear ();
122 bool is_expected (string s)
124 bool expected = false;
125 for (vsize i = 0; i < expected_warnings.size (); i++)
127 // Compare the msg with the suppressed string; If the beginning matches,
128 // i.e. the msg can have additional content AFTER the full (exact)
129 // suppressed message, suppress the warning.
130 // This is needed for the Input class, where the message contains
131 // the input file contents after the real message.
132 if (s.compare (0, expected_warnings[i].size (), expected_warnings[i]) == 0)
135 expected_warnings.erase (expected_warnings.begin () + i);
143 * Helper functions: print_message_part (no newline prepended)
144 * print_message (always starts on a new line)
147 /* Is output message at NEWLINE? */
148 static bool message_newline = true;
150 /* Display user information as a full message.
151 if newline is true, start the message on a new line.
154 print_message (int level, string location, string s, bool newline)
156 /* Only print the message if the current loglevel allows it: */
157 if (!is_loglevel (level))
159 if (newline && !message_newline)
160 fputc ('\n', stderr);
162 /* Test if all silly progress_indication ("\n") can be dropped now. */
166 if (!location.empty ())
167 s = location + ": " + s;
168 fputs (s.c_str (), stderr);
171 message_newline = s[s.length () - 1] == '\n';
174 /** The actual output functions to be called in lilypond code.
175 * Sorted in descending order of importance (errors, warnings, progress, info,
176 * debug). Each prints a message on a separate line.
179 /* Display a fatal error message. Also exits lilypond. */
181 error (string s, string location)
183 print_message (LOG_ERROR, location, _f ("fatal error: %s", s) + "\n");
187 /* Display a severe programming error message, but don't exit. */
189 programming_error (string s, string location)
192 print_message (LOG_DEBUG, location, _f ("suppressed programming error: %s", s) + "\n");
193 else if (warning_as_error)
197 print_message (LOG_ERROR, location, _f ("programming error: %s", s) + "\n");
198 print_message (LOG_ERROR, location, _ ("continuing, cross fingers") + "\n");
202 /* Display a non-fatal error message, don't exit. */
204 non_fatal_error (string s, string location)
207 print_message (LOG_DEBUG, location, _f ("suppressed error: %s", s) + "\n");
208 else if (warning_as_error)
211 print_message (LOG_ERROR, location, _f ("error: %s", s) + "\n");
214 /* Display a warning message. */
216 warning (string s, string location)
219 print_message (LOG_DEBUG, location, _f ("suppressed warning: %s", s) + "\n");
220 else if (warning_as_error)
223 print_message (LOG_WARN, location, _f ("warning: %s", s) + "\n");
226 /* Display a success message. */
228 basic_progress (string s, string location)
230 print_message (LOG_BASIC, location, s + "\n", true);
233 /* Display information about the progress. */
235 progress_indication (string s, bool newline, string location)
237 print_message (LOG_PROGRESS, location, s, newline);
240 /* Display a single info message. */
242 message (string s, bool newline, string location)
244 // Use the progress loglevel for all normal messages (including progress msg)
245 print_message (LOG_INFO, location, s, newline);
248 /* Display a debug information, not necessarily on a new line. */
250 debug_output (string s, bool newline, string location)
252 print_message (LOG_DEBUG, location, s, newline);