Added 'each-row' and 'to-upper' commands

README.md

@@ -55,6 +55,8 @@ Others:
 | `}`        | Increase cell width  |
 | `/`        | Search for cell matching regular expression |
 | `n`        | Find next cell matching search |
+| `y`        | Copy cell value |
+ | `p`       | Paste cell value |
 | `:`        | Enter command |
 
 ## Commands
@@ -62,7 +64,7 @@ Others:
 Commands can be entered by pressing `:` and typing in the command or alias.
 
 | Command               | Alias      | Description             |
-|:----------------|:-----------|:------------------------|
+|:----------------------|:-----------|:------------------------|
 | `save`                | `w`        | Save the current file. |
 | `quit`                | `q`        | Quit the application without saving changes. |
 | `save-and-quit`       | `wq`       | Save the current file and quit the application. |
@@ -70,3 +72,4 @@ Commands can be entered by pressing `:` and typing in the command or alias.
 | `open-right`          |            | Insert a new column to the right of the currently selected column. |
 | `delete-row`          |            | Delete the currently selected row. |
 | `delete-column`       |            | Delete the currently selected column. |
+

commandmap.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"regexp"
+	"strings"
 
 	"github.com/lmika/shellwords"
 
@@ -67,12 +68,16 @@ func (cm *CommandMapping) Eval(ctx *CommandContext, expr string) error {
 		return nil
 	}
 
-	cmd := cm.Commands[toks[0]]
-	if cmd != nil {
-		return cmd.Do(ctx.WithArgs(toks[1:]))
+	return cm.Invoke(ctx, toks[0], toks[1:])
 }
 
-	return fmt.Errorf("no such command: %v", expr)
+func (cm *CommandMapping) Invoke(ctx *CommandContext, name string, args []string) error {
+	cmd := cm.Commands[name]
+	if cmd != nil {
+		return cmd.Do(ctx.WithArgs(args))
+	}
+
+	return fmt.Errorf("no such command: %v", name)
 }
 
 // Registers the standard view navigation commands.  These commands require the frame
@@ -345,8 +350,65 @@ func (cm *CommandMapping) RegisterViewCommands() {
 		return nil
 	})
 
+	cm.Define("to-upper", "Convert cell value to uppercase", "", func(ctx *CommandContext) error {
+		grid := ctx.Frame().Grid()
+		cellX, cellY := grid.CellPosition()
+
+		// TODO: allow ranges
+
+		if _, isRwModel := ctx.ModelVC().Model().(RWModel); !isRwModel {
+			return errors.New("Model is read-only")
+		}
+
+		currentValue := ctx.ModelVC().Model().CellValue(cellY, cellX)
+		newValue := strings.ToUpper(currentValue)
+		if err := ctx.ModelVC().SetCellValue(cellY, cellX, newValue); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	cm.Define("each-row", "Executes the command for each row in the column", "", func(ctx *CommandContext) error {
+		if len(ctx.args) != 1 {
+			return errors.New("Sub-command required")
+		}
+
+		grid := ctx.Frame().Grid()
+		rows, _ := ctx.ModelVC().Model().Dimensions()
+
+		cellX, cellY := grid.CellPosition()
+		defer grid.MoveTo(cellX, cellY)
+
+		subCommand := ctx.args
+
+		for r := 0; r < rows; r++ {
+			grid.MoveTo(cellX, r)
+
+			if err := ctx.Session().Commands.Invoke(ctx, subCommand[0], subCommand[1:]); err != nil {
+				return fmt.Errorf("at [%d, %d]: %v", cellX, r, err)
+			}
+		}
+
+		return nil
+	})
+
 	cm.Define("save", "Save current file", "", func(ctx *CommandContext) error {
-		wSource, isWSource := ctx.Session().Source.(WritableModelSource)
+		var source ModelSource
+		if len(ctx.args) >= 2 {
+			targetCodecName := ctx.args[0]
+			codecBuilder, hasCodec := codecModelSourceBuilders[targetCodecName]
+			if !hasCodec {
+				return fmt.Errorf("unrecognsed codec: %v", targetCodecName)
+			}
+
+			targetFilename := ctx.args[1]
+			source = codecBuilder(targetFilename)
+		} else {
+			source = ctx.Session().Source
+		}
+
+		wSource, isWSource := source.(WritableModelSource)
 		if !isWSource {
 			return fmt.Errorf("model is not writable")
 		}
@@ -356,6 +418,7 @@ func (cm *CommandMapping) RegisterViewCommands() {
 		}
 
 		ctx.Frame().Message("Wrote " + wSource.String())
+		ctx.Session().Source = wSource
 		return nil
 	})
 

main.go

@@ -46,4 +46,7 @@ var codecModelSourceBuilders = map[string]codecModelSourceBuilder{
 	"tsv": func(filename string) ModelSource {
 		return NewCsvFileModelSource(filename, CsvFileModelSourceOptions{Comma: '\t'})
 	},
+	"jira": func(filename string) ModelSource {
+		return JiraTableModelSource{Filename: filename, Header: true}
+	},
 }

modelsource.go

@@ -2,9 +2,12 @@ package main
 
 import (
 	"encoding/csv"
+	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
+	"strings"
 )
 
 // ModelSource is a source of models.  At a minimum, it must be able to read models.
@@ -108,3 +111,55 @@ func (s CsvFileModelSource) Write(m Model) error {
 
 	return f.Close()
 }
+
+type JiraTableModelSource struct {
+	Filename string
+	Header   bool
+}
+
+func (s JiraTableModelSource) String() string {
+	return filepath.Base(s.Filename)
+}
+
+func (JiraTableModelSource) Read() (Model, error) {
+	return nil, errors.New("read not supported yet")
+}
+
+func (s JiraTableModelSource) Write(m Model) error {
+	f, err := os.Create(s.Filename)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	rows, cols := m.Dimensions()
+	line := new(strings.Builder)
+
+	for r := 0; r < rows; r++ {
+		sep := "|"
+		if r == 0 && s.Header {
+			sep = "||"
+		}
+
+		line.Reset()
+		line.WriteString(sep)
+		line.WriteRune(' ')
+
+		for c := 0; c < cols; c++ {
+			if c >= 1 {
+				line.WriteRune(' ')
+				line.WriteString(sep)
+				line.WriteRune(' ')
+			}
+			line.WriteString(m.CellValue(r, c))
+		}
+
+		line.WriteRune(' ')
+		line.WriteString(sep)
+		if _, err := fmt.Fprintln(f, line.String()); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}