1No::Worries(3)        User Contributed Perl Documentation       No::Worries(3)
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NAME

6       No::Worries - coding without worries
7

SYNOPSIS

9         use No::Worries qw($HostName $ProgramName);
10
11         printf("host is %s\n", $HostName);
12         printf("program is %s\n", $ProgramName);
13

DESCRIPTION

15       This module and its sub-modules ease coding by providing consistent
16       convenient functions to perform frequently used programming tasks.
17
18       This module also exposes the $HostName and $ProgramName variables that
19       represent what the sub-modules think the host name or program name is.
20       These variables can be changed, if needed.
21

PROGRAMMING STYLE

23   ERROR HANDLING
24       All the functions die() on error so one does not have to worry about
25       error checking: by default, any error will stop the code execution. The
26       recommended way to catch errors is to use eval().
27
28       For consistency, all the sub-modules use No::Worries::Die's dief() to
29       report errors and No::Worries::Warn's warnf() to report warnings. The
30       NO_WORRIES environment variable can be used to control how errors and
31       warnings are reported (see No::Worries::Die and No::Worries::Warn).
32
33   OPTION PASSING
34       All the functions use the same consistent API with hashes to pass
35       options like in:
36
37         dir_make("/tmp/some/path", mode => 0770);
38
39       This is a bit overkill when only one option is supported but it allows
40       adding options later without breaking old code.
41
42       The options can also be passed via a hash reference (this can be useful
43       to avoid data copying):
44
45         dir_make("/tmp/some/path", { mode => 0770 });
46
47       All the options are checked using Params::Validate.
48
49   SYMBOL IMPORTING
50       All the modules are "clean" in the sense that they do not import any
51       symbol into the caller's namespace. All the needed symbols (usually
52       functions) have to be explicitly imported like in:
53
54         use No::Worries::Die qw(dief);
55
56       In addition, all "normal" symbols can be imported at once using the
57       asterisk character:
58
59         use No::Worries::Log qw(*);
60

MODULES

62       Here are the relevant sub-modules and what they provide:
63
64       No::Worries::Date - date handling:
65           •   date_parse(STRING)
66
67           •   date_stamp([TIME])
68
69           •   date_string([TIME])
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71       No::Worries::Die - error handling:
72           •   dief(FORMAT, ARGUMENTS...)
73
74       No::Worries::Dir - directory handling:
75           •   dir_change(PATH)
76
77           •   dir_ensure(PATH[, OPTIONS])
78
79           •   dir_make(PATH[, OPTIONS])
80
81           •   dir_parent(PATH)
82
83           •   dir_read(PATH)
84
85           •   dir_remove(PATH)
86
87       No::Worries::DN - Distinguished Names handling:
88           •   dn_parse(STRING)
89
90           •   dn_string(DN, FORMAT)
91
92       No::Worries::Export - export control:
93           •   export_control(CALLERPKG, PKG, EXPORT, NAMES...)
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95       No::Worries::File - file handling:
96           •   file_read(PATH[, OPTIONS])
97
98           •   file_write(PATH[, OPTIONS])
99
100           •   file_update(PATH[, OPTIONS])
101
102       No::Worries::Log - logging (log and filter information):
103           •   log_filter(FILTER)
104
105           •   log_configure(PATH)
106
107log_wants_error()
108
109log_wants_warning()
110
111log_wants_info()
112
113log_wants_debug()
114
115log_wants_trace()
116
117           •   log_error(ARGUMENTS)
118
119           •   log_warning(ARGUMENTS)
120
121           •   log_info(ARGUMENTS)
122
123           •   log_debug(ARGUMENTS)
124
125log_trace()
126
127           •   log2std(INFO)
128
129           •   log2dump(INFO)
130
131       No::Worries::PidFile - pid file handling:
132           •   pf_set(PATH[, OPTIONS])
133
134           •   pf_check(PATH[, OPTIONS])
135
136           •   pf_unset(PATH)
137
138           •   pf_touch(PATH)
139
140           •   pf_sleep(PATH[, OPTIONS])
141
142           •   pf_status(PATH[, OPTIONS])
143
144           •   pf_quit(PATH[, OPTIONS])
145
146       No::Worries::Proc - process handling:
147           •   proc_output(COMMAND...)
148
149           •   proc_create(OPTIONS)
150
151           •   proc_terminate(PROC[, OPTIONS])
152
153           •   proc_monitor(PROCS[, OPTIONS])
154
155           •   proc_run(OPTIONS)
156
157           •   proc_detach([OPTIONS])
158
159           •   proc_status(STATUS)
160
161       No::Worries::Stat - file status handling:
162           •   stat_ensure(PATH[, OPTIONS])
163
164           •   stat_type(MODE)
165
166       No::Worries::String - string handling:
167           •   string_bytefmt(NUMBER[, PRECISION])
168
169           •   string_escape(STRING)
170
171           •   string_plural(STRING)
172
173           •   string_quantify(NUMBER, STRING)
174
175           •   string_table(TABLE[, OPTIONS])
176
177           •   string_trim(STRING)
178
179       No::Worries::Syslog - syslog handling:
180           •   syslog_open([OPTIONS])
181
182syslog_close()
183
184           •   syslog_sanitize(STRING)
185
186           •   syslog_debug(FORMAT, ARGUMENTS...)
187
188           •   syslog_info(FORMAT, ARGUMENTS...)
189
190           •   syslog_warning(FORMAT, ARGUMENTS...)
191
192           •   syslog_error(FORMAT, ARGUMENTS...)
193
194           •   log2syslog(INFO)
195
196       No::Worries::Warn - warning handling:
197           •   warnf(FORMAT, ARGUMENTS...)
198

ENVIRONMENT VARIABLES

200       The No::Worries::Die and No::Worries::Warn modules use the "NO_WORRIES"
201       environment variable to control how errors and warnings should be
202       reported.
203

GLOBAL VARIABLES

205       This module uses the following global variables (that can all be
206       imported):
207
208       $HostName
209           the name of the host this program runs on (default: derived from
210           Sys::Hostname)
211
212       $ProgramName
213           the name of the program currently running (default: derived from
214           $0)
215

SEE ALSO

217       No::Worries::Date, No::Worries::Die, No::Worries::Dir, No::Worries::DN,
218       No::Worries::Export, No::Worries::File, No::Worries::Log,
219       No::Worries::PidFile, No::Worries::Proc, No::Worries::Stat,
220       No::Worries::String, No::Worries::Syslog, No::Worries::Warn,
221       Params::Validate.
222

AUTHOR

224       Lionel Cons <http://cern.ch/lionel.cons>
225
226       Copyright (C) CERN 2012-2019
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230perl v5.32.1                      2021-01-27                    No::Worries(3)
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