new altkv verb

c/cli/mlrcli.c

@@ -38,6 +38,7 @@
 // ----------------------------------------------------------------
 static mapper_setup_t* mapper_lookup_table[] = {
 
+	&mapper_altkv_setup,
 	&mapper_bar_setup,
 	&mapper_bootstrap_setup,
 	&mapper_cat_setup,

c/mapping/Makefile.am

@@ -1,6 +1,7 @@
 noinst_LTLIBRARIES=	libmapping.la
 libmapping_la_SOURCES=	\
 			mapper.h \
+			mapper_altkv.c \
 			mapper_bar.c \
 			mapper_bootstrap.c \
 			mapper_cat.c \

c/mapping/mappers.h

@@ -4,6 +4,7 @@
 #include "containers/slls.h"
 #include "mapping/mapper.h"
 
+extern mapper_setup_t mapper_altkv_setup;
 extern mapper_setup_t mapper_bar_setup;
 extern mapper_setup_t mapper_bootstrap_setup;
 extern mapper_setup_t mapper_cat_setup;

c/reg_test/expected/out

@@ -468,6 +468,12 @@ zee wye 8  [0.0314419]*******...[0.75868] [0.134189]*********#[0.976181]
 hat wye 9  [0.0314419]#.........[0.75868] [0.134189]*******...[0.976181]
 pan wye 10 [0.0314419]******....[0.75868] [0.134189]*********.[0.976181]
 
+mlr altkv
+a=b,c=d,e=f
+
+mlr altkv
+a=b,c=d,e=f,4=g
+
 
 ================================================================
 TRIVIAL RETAINERS

c/reg_test/run

@@ -213,6 +213,13 @@ run_mlr --opprint bar -f x,y --lo 0 --hi 1 $indir/abixy
 run_mlr --opprint bar -f x,y -c c -x x -b b --lo 0.1 --hi 0.9 -w 20 $indir/abixy
 run_mlr --opprint bar --auto -f x,y -w 10 $indir/abixy
 
+run_mlr altkv <<EOF
+a,b,c,d,e,f
+EOF
+run_mlr altkv <<EOF
+a,b,c,d,e,f,g
+EOF
+
 # ----------------------------------------------------------------
 announce TRIVIAL RETAINERS
 

doc/content-for-reference-verbs.html

@@ -47,6 +47,19 @@ More information about them can be found <a href="reference-dsl.html">here</a>.
 </td> </tr>
 </table>
 
+</div>
+<!-- ================================================================ -->
+<h1>altkv</h1>
+<button style="font-weight:bold;color:maroon;border:0" padding=0 onclick="toggle_by_name('section_toggle_bar');" href="javascript:;">Toggle section visibility</button>
+<div id="section_toggle_bar" style="display: block">
+
+<p/> Map list of values to alternating key/value pairs.
+
+POKI_RUN_COMMAND{{mlr altkv -h}}HERE
+
+POKI_RUN_COMMAND{{echo 'a,b,c,d,e,f' mlr --opprint altkv}}HERE
+POKI_RUN_COMMAND{{echo 'a,b,c,d,e,f,g' mlr --opprint altkv}}HERE
+
 </div>
 <!-- ================================================================ -->
 <h1>bar</h1>

doc/manpage.html

@@ -319,7 +319,7 @@ OPTIONS
 	 -K			      Show a bare listing of keywords by name.
 
    VERB LIST
-	bar bootstrap cat check count-distinct count-similar cut decimate filter
+	altkv bar bootstrap cat check count-distinct count-similar cut decimate filter
 	fraction grep group-by group-like having-fields head histogram join label
 	least-frequent merge-fields most-frequent nest nothing put regularize rename
 	reorder repeat reshape sample sec2gmt sec2gmtdate seqgen shuffle sort stats1
@@ -580,6 +580,10 @@ OPTIONS
        For more information, please invoke mlr {subcommand} --help
 
 VERBS
+   altkv
+       Usage: mlr altkv [no options]
+       Given fields with values of the form a,b,c,d,e,f emits a=b,c=d,e=f pairs.
+
    bar
        Usage: mlr bar [options]
        Replaces a numeric field with a number of asterisks, allowing for cheesy

doc/manpage.txt

@@ -125,7 +125,7 @@ OPTIONS
 	 -K			      Show a bare listing of keywords by name.
 
    VERB LIST
-	bar bootstrap cat check count-distinct count-similar cut decimate filter
+	altkv bar bootstrap cat check count-distinct count-similar cut decimate filter
 	fraction grep group-by group-like having-fields head histogram join label
 	least-frequent merge-fields most-frequent nest nothing put regularize rename
 	reorder repeat reshape sample sec2gmt sec2gmtdate seqgen shuffle sort stats1
@@ -386,6 +386,10 @@ OPTIONS
        For more information, please invoke mlr {subcommand} --help
 
 VERBS
+   altkv
+       Usage: mlr altkv [no options]
+       Given fields with values of the form a,b,c,d,e,f emits a=b,c=d,e=f pairs.
+
    bar
        Usage: mlr bar [options]
        Replaces a numeric field with a number of asterisks, allowing for cheesy

doc/mlr.1

@@ -168,7 +168,7 @@ output separator to the given value.
 .RS 0
 .\}
 .nf
- bar bootstrap cat check count-distinct count-similar cut decimate filter
+ altkv bar bootstrap cat check count-distinct count-similar cut decimate filter
  fraction grep group-by group-like having-fields head histogram join label
  least-frequent merge-fields most-frequent nest nothing put regularize rename
  reorder repeat reshape sample sec2gmt sec2gmtdate seqgen shuffle sort stats1
@@ -505,6 +505,16 @@ For more information, please invoke mlr {subcommand} --help
 .SH "VERBS"
 .sp
 
+.SS "altkv"
+.if n \{\
+.RS 0
+.\}
+.nf
+Usage: mlr altkv [no options]
+Given fields with values of the form a,b,c,d,e,f emits a=b,c=d,e=f pairs.
+.fi
+.if n \{\
+.RE
 .SS "bar"
 .if n \{\
 .RS 0

doc/reference-verbs.html

@@ -189,6 +189,7 @@ Miller commands were run with pretty-print-tabular output format.
 <div class="pokitoc">
 <center><b>Contents:</b></center>
 &bull;&nbsp;<a href="#Overview">Overview</a><br/>
+&bull;&nbsp;<a href="#altkv">altkv</a><br/>
 &bull;&nbsp;<a href="#bar">bar</a><br/>
 &bull;&nbsp;<a href="#bootstrap">bootstrap</a><br/>
 &bull;&nbsp;<a href="#cat">cat</a><br/>
@@ -303,6 +304,41 @@ a=wye,x_sum=0.777892
 </td> </tr>
 </table>
 
+</div>
+<!-- ================================================================ -->
+<a id="altkv"/><h1>altkv</h1>
+<button style="font-weight:bold;color:maroon;border:0" padding=0 onclick="toggle_by_name('section_toggle_bar');" href="javascript:;">Toggle section visibility</button>
+<div id="section_toggle_bar" style="display: block">
+
+<p/> Map list of values to alternating key/value pairs.
+
+<p/>
+<div class="pokipanel">
+<pre>
+$ mlr altkv -h
+Usage: mlr altkv [no options]
+Given fields with values of the form a,b,c,d,e,f emits a=b,c=d,e=f pairs.
+</pre>
+</div>
+<p/>
+
+<p/>
+<div class="pokipanel">
+<pre>
+$ echo 'a,b,c,d,e,f' mlr --opprint altkv
+a,b,c,d,e,f mlr --opprint altkv
+</pre>
+</div>
+<p/>
+<p/>
+<div class="pokipanel">
+<pre>
+$ echo 'a,b,c,d,e,f,g' mlr --opprint altkv
+a,b,c,d,e,f,g mlr --opprint altkv
+</pre>
+</div>
+<p/>
+
 </div>
 <!-- ================================================================ -->
 <a id="bar"/><h1>bar</h1>

doc/reference.html

@@ -1439,11 +1439,11 @@ Help options:
   -K                           Show a bare listing of keywords by name.
 
 Verbs:
-   bar bootstrap cat check count-distinct count-similar cut decimate filter
-   fraction grep group-by group-like having-fields head histogram join label
-   least-frequent merge-fields most-frequent nest nothing put regularize rename
-   reorder repeat reshape sample sec2gmt sec2gmtdate seqgen shuffle sort stats1
-   stats2 step tac tail tee top uniq unsparsify
+   altkv bar bootstrap cat check count-distinct count-similar cut decimate
+   filter fraction grep group-by group-like having-fields head histogram join
+   label least-frequent merge-fields most-frequent nest nothing put regularize
+   rename reorder repeat reshape sample sec2gmt sec2gmtdate seqgen shuffle sort
+   stats1 stats2 step tac tail tee top uniq unsparsify
 
 Functions for the filter and put verbs:
    + + - - * / // .+ .+ .- .- .* ./ .// % ** | ^ & ~ << >> bitcount == != =~