diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/package.n | 109 | ||||
| -rw-r--r-- | doc/string.n | 68 |
2 files changed, 129 insertions, 48 deletions
diff --git a/doc/package.n b/doc/package.n index 6c08f70..f304af2 100644 --- a/doc/package.n +++ b/doc/package.n @@ -4,7 +4,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: package.n,v 1.18 2007/10/24 14:29:38 dkf Exp $ +'\" RCS: @(#) $Id: package.n,v 1.19 2007/10/25 10:13:35 dkf Exp $ '\" .so man.macros .TH package n 7.5 Tcl "Tcl Built-In Commands" @@ -29,7 +29,6 @@ package \- Facilities for package loading and version control \fBpackage prefer \fR?\fBlatest\fR|\fBstable\fR? .fi .BE - .SH DESCRIPTION .PP This command keeps a simple database of the packages available for @@ -110,10 +109,13 @@ vsatisfies\fR. If multiple versions are suitable the implementation with the highest version is chosen. This last part is additionally influenced by the selection mode set with \fBpackage prefer\fR. .PP -In the "stable" selection mode the command will select the highest +In the +.QW "stable" +selection mode the command will select the highest stable version satisfying the requirements, if any. If no stable version satisfies the requirements, the highest unstable version -satisfying the requirements will be selected. In the "latest" +satisfying the requirements will be selected. In the +.QW "latest" selection mode the command will accept the highest version satisfying all the requirements, regardless of its stableness. .PP @@ -181,17 +183,24 @@ have any of the forms: .RS .TP min -This form is called "min-bounded". +This form is called +.QW "min-bounded" . .TP min- -This form is called "min-unbound". +This form is called +.QW "min-unbound" . .TP min-max -This form is called "bounded". +This form is called +.QW "bounded" . .RE .RS .PP -where "min" and "max" are valid version numbers. The legacy syntax is +where +.QW "min" +and +.QW "max" +are valid version numbers. The legacy syntax is a special case of the extended syntax, keeping backward compatibility. Regarding satisfaction the rules are: .RE @@ -200,7 +209,9 @@ compatibility. Regarding satisfaction the rules are: The \fIversion\fR has to pass at least one of the listed \fIrequirement\fRs to be satisfactory. .IP [2] -A version satisfies a "bounded" requirement when +A version satisfies a +.QW "bounded" +requirement when .RS .IP [a] For \fImin\fR equal to the \fImax\fR if, and only if the \fIversion\fR @@ -208,42 +219,63 @@ is equal to the \fImin\fR. .IP [b] Otherwise if, and only if the \fIversion\fR is greater than or equal to the \fImin\fR, and less than the \fImax\fR, where both \fImin\fR -and \fImax\fR have been padded internally with 'a0'. Note that while -the comparison to \fImin\fR is inclusive, the comparison to +and \fImax\fR have been padded internally with +.QW a0 . +Note that while the comparison to \fImin\fR is inclusive, the comparison to \fImax\fR is exclusive. .RE .IP [3] -A "min-bounded" requirement is a "bounded" requirement in disguise, +A +.QW "min-bounded" +requirement is a +.QW "bounded" +requirement in disguise, with the \fImax\fR part implicitly specified as the next higher major version number of the \fImin\fR part. A version satisfies it per the rules above. .IP [4] -A \fIversion\fR satisfies a "min-unbound" requirement if, and only if +A \fIversion\fR satisfies a +.QW "min-unbound" +requirement if, and only if it is greater than or equal to the \fImin\fR, where the \fImin\fR has -been padded internally with 'a0'. There is no constraint to a maximum. +been padded internally with +.QW a0 . +There is no constraint to a maximum. .RE .TP \fBpackage prefer \fR?\fBlatest\fR|\fBstable\fR? -With no arguments, the commands returns either "latest" or "stable", +With no arguments, the commands returns either +.QW "latest" +or +.QW "stable" , whichever describes the current mode of selection logic used by \fBpackage require\fR. .RS .PP -When passed the argument "latest", it sets the selection logic mode to -"latest". +When passed the argument +.QW "latest" , +it sets the selection logic mode to +.QW "latest" . .PP -When passed the argument "stable", if the mode is already "stable", -that value is kept. If the mode is already "latest", then the attempt -to set it back to "stable" is ineffective and the mode value remains -"latest". +When passed the argument +.QW "stable" , +if the mode is already +.QW "stable" , +that value is kept. If the mode is already +.QW "latest" , then the attempt to set it back to +.QW "stable" +is ineffective and the mode value remains +.QW "latest" . .PP When passed any other value as an argument, raise an invalid argument error. .PP When an interpreter is created, its initial selection mode value is set to -"stable" unless the environment variable \fBTCL_PKG_PREFER_LATEST\fR +.QW "stable" +unless the environment variable \fBTCL_PKG_PREFER_LATEST\fR is set. If that environment variable is defined (with any value) then -the initial (and permanent) selection mode value is set to "latest". +the initial (and permanent) selection mode value is set to +.QW "latest" . .RE .SH "VERSION NUMBERS" .PP @@ -256,16 +288,29 @@ For example, version 2.1 is later than 1.3 and version 3.4.6 is later than 3.3.5. Missing fields are equivalent to zeroes: version 1.3 is the same as version 1.3.0 and 1.3.0.0, so it is earlier than 1.3.1 or 1.3.0.2. -In addition, the letters 'a' (alpha) and/or 'b' (beta) may appear +In addition, the letters +.QW a +(alpha) and/or +.QW b +(beta) may appear exactly once to replace a dot for separation. These letters -semantically add a negative specifier into the version, where 'a' is --2, and 'b' is -1. Each may be specified only once, and 'a' or 'b' are -mutually exclusive in a specifier. Thus 1.3a1 becomes (semantically) +semantically add a negative specifier into the version, where +.QW a +is -2, and +.QW b +is -1. Each may be specified only once, and +.QW a +and +.QW b +are mutually exclusive in a specifier. Thus 1.3a1 becomes (semantically) 1.3.-2.1, 1.3b1 is 1.3.-1.1. Negative numbers are not directly allowed in version specifiers. -A version number not containing the letters 'a' or 'b' as specified -above is called a \fBstable\fR version, whereas presence of the letters -causes the version to be called is \fBunstable\fR. +A version number not containing the letters +.QW a +or +.QW b +as specified above is called a \fBstable\fR version, whereas presence +of the letters causes the version to be called is \fBunstable\fR. A later version number is assumed to be upwards compatible with an earlier version number as long as both versions have the same major version number. @@ -279,7 +324,7 @@ to work unmodified with either version 1.7.3 or version 3.1. The recommended way to use packages in Tcl is to invoke \fBpackage require\fR and \fBpackage provide\fR commands in scripts, and use the procedure \fBpkg_mkIndex\fR to create package index files. -Once you've done this, packages will be loaded automatically +Once you have done this, packages will be loaded automatically in response to \fBpackage require\fR commands. See the documentation for \fBpkg_mkIndex\fR for details. .SH EXAMPLES @@ -301,9 +346,7 @@ if {[catch {\fBpackage require\fR Snack}]} { # We have the package, configure the app to use it } .CE - .SH "SEE ALSO" msgcat(n), packagens(n), pkgMkIndex(n) - .SH KEYWORDS package, version diff --git a/doc/string.n b/doc/string.n index 23c1e3b..aefec02 100644 --- a/doc/string.n +++ b/doc/string.n @@ -5,7 +5,7 @@ .\" See the file "license.terms" for information on usage and redistribution .\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. .\" -.\" RCS: @(#) $Id: string.n,v 1.35 2007/06/08 20:41:25 dkf Exp $ +.\" RCS: @(#) $Id: string.n,v 1.36 2007/10/25 10:09:00 dkf Exp $ .\" .so man.macros .TH string n 8.1 Tcl "Tcl Built-In Commands" @@ -16,13 +16,13 @@ string \- Manipulate strings .SH SYNOPSIS \fBstring \fIoption arg \fR?\fIarg ...?\fR .BE - .SH DESCRIPTION .PP Performs one of several string operations, depending on \fIoption\fR. The legal \fIoption\fRs (which may be abbreviated) are: .TP \fBstring bytelength \fIstring\fR +. Returns a decimal string giving the number of bytes used to represent \fIstring\fR in memory. Because UTF\-8 uses one to three bytes to represent Unicode characters, the byte length will not be the same as @@ -33,6 +33,7 @@ Tcl ByteArray object). Refer to the \fBTcl_NumUtfChars\fR manual entry for more details on the UTF\-8 representation. .TP \fBstring compare\fR ?\fB\-nocase\fR? ?\fB\-length int\fR? \fIstring1 string2\fR +. Perform a character-by-character comparison of strings \fIstring1\fR and \fIstring2\fR. Returns \-1, 0, or 1, depending on whether \fIstring1\fR is lexicographically less than, equal to, or greater @@ -42,6 +43,7 @@ first \fIlength\fR characters are used in the comparison. If specified, then the strings are compared in a case-insensitive manner. .TP \fBstring equal\fR ?\fB\-nocase\fR? ?\fB-length int\fR? \fIstring1 string2\fR +. Perform a character-by-character comparison of strings \fIstring1\fR and \fIstring2\fR. Returns 1 if \fIstring1\fR and \fIstring2\fR are identical, or 0 when not. If \fB\-length\fR is specified, then only @@ -50,6 +52,7 @@ the first \fIlength\fR characters are used in the comparison. If specified, then the strings are compared in a case-insensitive manner. .TP \fBstring first \fIneedleString haystackString\fR ?\fIstartIndex\fR? +. Search \fIhaystackString\fR for a sequence of characters that exactly match the characters in \fIneedleString\fR. If found, return the index of the first character in the first such match within \fIhaystackString\fR. If not @@ -69,6 +72,7 @@ will return \fB\-1\fR. .RE .TP \fBstring index \fIstring charIndex\fR +. Returns the \fIcharIndex\fR'th character of the \fIstring\fR argument. A \fIcharIndex\fR of 0 corresponds to the first character of the string. \fIcharIndex\fR may be specified as follows: @@ -77,24 +81,42 @@ string. \fIcharIndex\fR may be specified as follows: .IP \fIinteger\fR 10 For any index value that passes \fBstring is integer -strict\fR, the char specified at this integral index -(e.g. \fB2\fR would refer to the "c" in "abcd"). +(e.g. \fB2\fR would refer to the +.QW "c" +in +.QW "abcd" ). .IP \fBend\fR 10 The last char of the string -(e.g. \fBend\fR would refer to the "d" in "abcd"). +(e.g. \fBend\fR would refer to the +.QW "d" +in +.QW "abcd" ). .IP \fBend\fR\-\fIN\fR 10 The last char of the string minus the specified integer offset \fIN\fR -(e.g. \fBend\fR\-1 would refer to the "c" in "abcd"). +(e.g. \fBend\fR\-1 would refer to the +.QW "c" +in +.QW "abcd" ). .IP \fBend\fR+\fIN\fR 10 The last char of the string plus the specified integer offset \fIN\fR -(e.g. \fBend\fR+\-1 would refer to the "c" in "abcd"). +(e.g. \fBend\fR+\-1 would refer to the +.QW "c" +in +"abcd" ). .IP \fIM\fR+\fIN\fR 10 The char specified at the integral index that is the sum of integer values \fIM\fR and \fIN\fR -(e.g. \fB1+1\fR would refer to the "c" in "abcd"). +(e.g. \fB1+1\fR would refer to the +.QW "c" +in +.QW "abcd" ). .IP \fIM\fR\-\fIN\fR 10 The char specified at the integral index that is the difference of integer values \fIM\fR and \fIN\fR -(e.g. \fB2\-1\fR would refer to the "b" in "abcd"). +(e.g. \fB2\-1\fR would refer to the +.QW "b" +in +.QW "abcd" ). .PP In the specifications above, the integer value \fIM\fR contains no trailing whitespace and the integer value \fIN\fR contains no @@ -106,6 +128,7 @@ length of the string then this command returns an empty string. .VE .TP \fBstring is \fIclass\fR ?\fB\-strict\fR? ?\fB\-failindex \fIvarname\fR? \fIstring\fR +. Returns 1 if \fIstring\fR is a valid member of the specified character class, otherwise returns 0. If \fB\-strict\fR is specified, then an empty string returns 0, otherwise an empty string will return 1 on @@ -145,8 +168,9 @@ the value, 0 is returned and the \fIvarname\fR will contain \-1. .IP \fBlist\fR 12 Any proper list structure, with optional surrounding whitespace. In case of improper list structure, 0 is returned and the \fIvarname\fR -will contain the index of the "element" where the list parsing fails, -or \-1 if this cannot be determined. +will contain the index of the +.QW element +where the list parsing fails, or \-1 if this cannot be determined. .IP \fBlower\fR 12 Any Unicode lower case alphabet character. .IP \fBprint\fR 12 @@ -178,6 +202,7 @@ function will return 0, then the \fIvarname\fR will always be set to .RE .TP \fBstring last \fIneedleString haystackString\fR ?\fIlastIndex\fR? +. Search \fIhaystackString\fR for a sequence of characters that exactly match the characters in \fIneedleString\fR. If found, return the index of the first character in the last such match within \fIhaystackString\fR. If there @@ -197,6 +222,7 @@ will return \fB1\fR. .RE .TP \fBstring length \fIstring\fR +. Returns a decimal string giving the number of characters in \fIstring\fR. Note that this is not necessarily the same as the number of bytes used to store the string. If the object is a @@ -204,6 +230,7 @@ ByteArray object (such as those returned from reading a binary encoded channel), then this will return the actual byte length of the object. .TP \fBstring map\fR ?\fB\-nocase\fR? \fImapping string\fR +. Replaces substrings in \fIstring\fR based on the key-value pairs in \fImapping\fR. \fImapping\fR is a list of \fIkey value key value ...\fR as in the form returned by \fBarray get\fR. Each instance of a @@ -230,6 +257,7 @@ it will return the string \fB02c322c222c\fR. .RE .TP \fBstring match\fR ?\fB\-nocase\fR? \fIpattern\fR \fIstring\fR +. See if \fIpattern\fR matches \fIstring\fR; return 1 if it does, 0 if it doesn't. If \fB\-nocase\fR is specified, then the pattern attempts to match against the string in a case insensitive manner. For the two @@ -257,6 +285,7 @@ the special interpretation of the characters \fB*?[]\e\fR in .RE .TP \fBstring range \fIstring first last\fR +. Returns a range of consecutive characters from \fIstring\fR, starting with the character whose index is \fIfirst\fR and ending with the character whose index is \fIlast\fR. An index of 0 refers to the first @@ -268,9 +297,12 @@ equal to the length of the string then it is treated as if it were string is returned. .TP \fBstring repeat \fIstring count\fR -Returns \fIstring\fR repeated \fIcount\fR number of times. +. +Returns the concatenation of \fIstring\fR repeated \fIcount\fR number +of times. .TP \fBstring replace \fIstring first last\fR ?\fInewstring\fR? +. Removes a range of consecutive characters from \fIstring\fR, starting with the character whose index is \fIfirst\fR and ending with the character whose index is \fIlast\fR. An index of 0 refers to the @@ -282,14 +314,16 @@ and if \fIlast\fR is greater than or equal to the length of the string then it is treated as if it were \fBend\fR. If \fIfirst\fR is greater than \fIlast\fR or the length of the initial string, or \fIlast\fR is less than 0, then the initial string is returned untouched. -.VS 8.5 .TP \fBstring reverse \fIstring\fR +. +.VS 8.5 Returns a string that is the same length as \fIstring\fR but with its characters in the reverse order. .VE 8.5 .TP \fBstring tolower \fIstring\fR ?\fIfirst\fR? ?\fIlast\fR? +. Returns a value equal to \fIstring\fR except that all upper (or title) case letters have been converted to lower case. If \fIfirst\fR is specified, it refers to the first char index in the string to start @@ -298,6 +332,7 @@ the string to stop at (inclusive). \fIfirst\fR and \fIlast\fR may be specified as for the \fBindex\fR method. .TP \fBstring totitle \fIstring\fR ?\fIfirst\fR? ?\fIlast\fR? +. Returns a value equal to \fIstring\fR except that the first character in \fIstring\fR is converted to its Unicode title case variant (or upper case if there is no title case variant) and the rest of the @@ -308,6 +343,7 @@ stop at (inclusive). \fIfirst\fR and \fIlast\fR may be specified as for the \fBindex\fR method. .TP \fBstring toupper \fIstring\fR ?\fIfirst\fR? ?\fIlast\fR? +. Returns a value equal to \fIstring\fR except that all lower (or title) case letters have been converted to upper case. If \fIfirst\fR is specified, it refers to the first char index in the string to start @@ -316,24 +352,28 @@ the string to stop at (inclusive). \fIfirst\fR and \fIlast\fR may be specified as for the \fBindex\fR method. .TP \fBstring trim \fIstring\fR ?\fIchars\fR? +. Returns a value equal to \fIstring\fR except that any leading or trailing characters present in the string given by \fIchars\fR are removed. If \fIchars\fR is not specified then white space is removed (spaces, tabs, newlines, and carriage returns). .TP \fBstring trimleft \fIstring\fR ?\fIchars\fR? +. Returns a value equal to \fIstring\fR except that any leading characters present in the string given by \fIchars\fR are removed. If \fIchars\fR is not specified then white space is removed (spaces, tabs, newlines, and carriage returns). .TP \fBstring trimright \fIstring\fR ?\fIchars\fR? +. Returns a value equal to \fIstring\fR except that any trailing characters present in the string given by \fIchars\fR are removed. If \fIchars\fR is not specified then white space is removed (spaces, tabs, newlines, and carriage returns). .TP \fBstring wordend \fIstring charIndex\fR +. Returns the index of the character just after the last one in the word containing character \fIcharIndex\fR of \fIstring\fR. \fIcharIndex\fR may be specified as for the \fBindex\fR method. A word is @@ -342,6 +382,7 @@ or decimal digits) or underscore (Unicode connector punctuation) characters, or any single character other than these. .TP \fBstring wordstart \fIstring charIndex\fR +. Returns the index of the first character in the word containing character \fIcharIndex\fR of \fIstring\fR. \fIcharIndex\fR may be specified as for the \fBindex\fR method. A word is considered to be any @@ -359,14 +400,11 @@ if {$length == 0} { set isPrefix [\fBstring equal\fR -length $length $string "foobar"] } .CE - .SH "SEE ALSO" expr(n), list(n) - .SH KEYWORDS case conversion, compare, index, match, pattern, string, word, equal, ctype, character, reverse - .\" Local Variables: .\" mode: nroff .\" End: |