initial alpha version of sheet (#201)

* initial alpha version of `sheet`

README.md

@@ -26,6 +26,9 @@ The ZSV CLI can be compiled to virtually any target, including
 direct CSV `sql`, `flatten`, `serialize`, `2json` conversion, `2db` sqlite3
 conversion, `stack`, `pretty`, `2tsv`, `compare`, `paste` and more.
 
+The ZSV CLI also includes `sheet`, an in-console interactive grid viewer
+that can be extended with your custom code for manipulating and viewing data.
+
 Pre-built CLI packages are available via `brew` and `nuget`.
 
 A pre-built library package is available for Node (`npm install zsv-lib`).
@@ -94,6 +97,7 @@ that implements the expected
 - Easy to use as a library in a few lines of code, via either pull or push
   parsing
 - Includes the `zsv` CLI with the following built-in commands:
+  - `sheet`, an in-console interactive and extendable grid viewer
   - `select`, `count`, `sql` query, `desc`ribe, `flatten`, `serialize`, `2json`,
     `2db`, `stack`, `pretty`, `2tsv`, `paste`, `compare`, `jq`, `prop`, `rm`
   - easily [convert between CSV/JSON/sqlite3](docs/csv_json_sqlite.md)
@@ -244,6 +248,7 @@ needs.
 
 `zsv` comes with several built-in commands:
 
+- `sheet`: an in-console, interactive grid viewer
 - `echo`: read CSV from stdin and write it back out to stdout. This is mostly
   useful for demonstrating how to use the API and also how to create a plug-in,
   and has several uses beyond that including adding/removing BOM, cleaning up

app/Makefile

@@ -101,14 +101,13 @@ ifeq ($(WIN),0)
       CFLAGS_EXE+= -s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=2 -s PTHREAD_POOL_SIZE=8
     endif
   endif
-  CFLAGS_SETENV=
 else
   BUILD_SUBDIR=win/${DBG_SUBDIR}
   EXE=.exe
-  CFLAGS+= -D__USE_MINGW_ANSI_STDIO -D_ISOC99_SOURCE
+  CFLAGS+= -D__USE_MINGW_ANSI_STDIO -D_ISOC99_SOURCE -D_GNU_SOURCE
   CFLAGS+= -Wl,--strip-all
   CONFIGURE_HOST=x86_64-w64-mingw32
-  CFLAGS_SETENV=-Dsetenv\(a,b,c\)=_putenv_s\(a,b\)
+  CFLAGS+=-Dsetenv\(a,b,c\)=_putenv_s\(a,b\)
 endif
 
 JQ_CONFIGURE_HOST=
@@ -188,6 +187,14 @@ ZSV=$(BINDIR)/zsv${EXE}
 SOURCES= echo paste count count-pull select select-pull 2tsv 2json serialize flatten pretty stack desc sql 2db compare prop rm mv jq
 CLI_SOURCES=echo select desc count paste 2tsv pretty sql flatten 2json serialize stack 2db compare prop rm mv jq
 
+ifeq ($(ZSV_BUILD_SHEET),1)
+  SOURCES+=sheet
+  CLI_SOURCES+=sheet
+  CFLAGS+=-DZSV_BUILD_SHEET
+  CFLAGS+=${CFLAGS_NCURSES}
+  LDFLAGS+=${LDFLAGS_NCURSES}
+endif
+
 CFLAGS+= -DUSE_JQ
 
 STATIC_LIB_FLAGS=
@@ -398,7 +405,7 @@ lib-jq: ${JQ_LIB}
 
 ${JQ_BUNDLE_LIB}: ${JQ_SRC} # -D_REENTRANT needed for clang to not break
 	cd ${JQ_SRC} \
-	&& CC="${CC}" CFLAGS="${CFLAGS} -D_REENTRANT ${CFLAGS_SETENV}" ./configure \
+	&& CC="${CC}" CFLAGS="${CFLAGS} -D_REENTRANT" ./configure \
 	    --prefix="${JQ_PREFIX}" \
 	    --disable-maintainer-mode \
 	    --without-oniguruma \

app/cli.c

@@ -69,6 +69,9 @@ ZSV_MAIN_DECL(desc);
 ZSV_MAIN_DECL(sql);
 ZSV_MAIN_DECL(2db);
 ZSV_MAIN_DECL(compare);
+#ifdef ZSV_BUILD_SHEET
+ZSV_MAIN_DECL(sheet);
+#endif
 ZSV_MAIN_DECL(echo);
 ZSV_MAIN_NO_OPTIONS_DECL(prop);
 ZSV_MAIN_NO_OPTIONS_DECL(rm);
@@ -108,6 +111,9 @@ struct builtin_cmd builtin_cmds[] = {
   CLI_BUILTIN_COMMAND(sql),
   CLI_BUILTIN_COMMAND(2db),
   CLI_BUILTIN_COMMAND(compare),
+#ifdef ZSV_BUILD_SHEET
+CLI_BUILTIN_COMMAND(sheet),
+#endif
   CLI_BUILTIN_COMMAND(echo),
   CLI_BUILTIN_NO_OPTIONS_COMMAND(prop),
   CLI_BUILTIN_NO_OPTIONS_COMMAND(rm),

app/cli_ini.c

@@ -3,7 +3,6 @@
  * This file is part of zsv/lib, distributed under the license defined at
  * https://opensource.org/licenses/MIT
  */
-
 #include <zsv/utils/string.h>
 #include <zsv/utils/os.h>
 #include <zsv/utils/dirs.h>

app/select.c

@@ -758,7 +758,6 @@ int ZSV_MAIN_FUNC(ZSV_COMMAND)(int argc, const char *argv[], struct zsv_opts *op
     return zsv_status_ok;
   }
 
-  int err = 0;
   char fixed_auto = 0;
   struct zsv_select_data data = {0};
   data.opts = opts;
@@ -863,9 +862,9 @@ int ZSV_MAIN_FUNC(ZSV_COMMAND)(int argc, const char *argv[], struct zsv_opts *op
       else
         data.sample_pct = d;
     } else if (!strcmp(argv[arg_i], "--prepend-header")) {
-      int err = 0;
-      data.prepend_header = zsv_next_arg(++arg_i, argc, argv, &err);
-      if (err)
+      int err1 = 0;
+      data.prepend_header = zsv_next_arg(++arg_i, argc, argv, &err1);
+      if (err1)
         stat = zsv_status_error;
     } else if (!strcmp(argv[arg_i], "--no-header"))
       data.no_header = 1;