Initial version 1.0.0

.gitignore

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+/bin
+# /.vscode
+*.csv
+!example.csv

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    {
+        "version": "0.2.0",
+        "configurations": [
+            {
+                "name": "Launch Package",
+                "type": "go",
+                "request": "launch",
+                "mode": "auto",
+                "program": "${fileBasename}",
+                "args": [
+                    "example.csv",
+                ]
+            }
+        ]
+    }
+}

LICENSE

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+MIT License
+
+Copyright (c) 2022 Антон Аксенов (aka Anthony Axenov)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

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+# https://habr.com/ru/post/461467/
+# https://tutorialedge.net/golang/makefiles-for-go-developers/
+# https://earthly.dev/blog/golang-makefile/
+BINARY_NAME=csv2md
+ARCH=amd64
+
+LINUX_PATH="bin/linux_${ARCH}"
+WINDOWS_PATH="bin/windows_${ARCH}"
+DARWIN_PATH="bin/darwin_${ARCH}"
+
+LINUX_FILE="${LINUX_PATH}/${BINARY_NAME}"
+WINDOWS_FILE="${WINDOWS_PATH}/${BINARY_NAME}.exe"
+DARWIN_FILE="${DARWIN_PATH}/${BINARY_NAME}"
+
+## clean: Removes all compiled binaries
+clean:
+	@go clean
+	@rm -rf bin/
+
+## linux: Builds new binaries for linux (x64)
+linux:
+	@rm -rf ${LINUX_PATH}
+	@GOARCH=${ARCH} GOOS=linux go build -o ${LINUX_FILE} . && echo "Compiled: ${LINUX_FILE}"
+
+## win: Builds new binaries for windows (x64)
+win:
+	@rm -rf ${WINDOWS_PATH}
+	@GOARCH=${ARCH} GOOS=windows go build -o ${WINDOWS_FILE} . && echo "Compiled: ${WINDOWS_FILE}"
+
+## darwin: Builds new binaries for darwin (x64)
+darwin:
+	@rm -rf ${DARWIN_PATH}
+	@GOARCH=${ARCH} GOOS=darwin go build -o ${DARWIN_FILE} . && echo "Compiled: ${DARWIN_FILE}"
+
+## build: Builds new binaries for linux, windows and darwin (x64)
+all: clean linux win darwin
+
+## compile: This message
+help: Makefile
+	@echo "Choose a command run:"
+	@sed -n 's/^##//p' $< | column -t -s ':' |  sed -e 's/^/ /'

README.md

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+# csv2md
+
+Stupidly simple tool to convert csv-file to [markdown](https://spec-md.com/) table.
+
+Outputs result in stdout.
+
+Building:
+
+```shell
+make help
+```
+
+Usage:
+
+```shell
+csv2md example.csv > example.md # makes new file
+csv2md example.csv | less       # view result using *pager*
+...anything is possible with redirection and piping
+```
+
+> **IMPORTANT:** input must be valid csv and whitespaces are allowed only between double-quotes.
+
+Examples can be found here: https://people.sc.fsu.edu/~jburkardt/data/csv/csv.html

example.csv

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+"Month","1958","1959","1960"
+"JAN",340,360,417
+"FEB",318,342,391
+"MAR",362,406,419
+"APR",348,396,461
+"MAY",363,420,472
+"JUN",435,472,535
+"JUL",491,548,622
+"AUG",505,559,606
+"SEP",404,463,508
+"OCT",359,407,461
+"NOV",310,362,390
+"DEC",337,405,432
+

go.mod

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+module axenov/csv2md
+
+go 1.17

main.go

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+package main
+
+import (
+	"encoding/csv"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const VERSION = "1.0.0"
+
+func main() {
+	if len(os.Args) < 2 {
+		usage()
+		os.Exit(1)
+	}
+
+	src, err := ExpandPath(os.Args[1])
+	if err != nil {
+		panic(err)
+	}
+	if _, err := os.Stat(src); err != nil {
+		panic(err)
+	}
+
+	result := convert(readCsv(src))
+	for _, row := range result {
+		fmt.Println(row)
+	}
+}
+
+func usage() {
+	fmt.Fprintln(os.Stderr, "csv2md v" + VERSION)
+	fmt.Fprintln(os.Stderr, "Usage: csv2md data.csv > data.md")
+}
+
+func ExpandPath(path string) (string, error) {
+	homepath, err := os.UserHomeDir()
+	if err != nil {
+		return "", err
+	}
+	newpath, err := filepath.Abs(strings.Replace(path, "~", homepath, 1))
+	return newpath, err
+}
+
+func readCsv(filePath string) [][]string {
+    f, err := os.Open(filePath)
+    if err != nil {
+        log.Fatal("Unable to read input file " + filePath, err)
+    }
+    defer f.Close()
+
+    csvReader := csv.NewReader(f)
+    records, err := csvReader.ReadAll()
+    if err != nil {
+        log.Fatal("Unable to parse file as CSV for " + filePath, err)
+    }
+
+    return records
+}
+
+func convert(records [][]string) []string {
+	var result []string
+	for idx, row := range records {
+		str := "| "
+		for _, col := range row {
+			str += col + " | "
+		}
+		result = append(result, str)
+		if idx == 0 {
+			str := "| "
+			for range row {
+				str += "--- | "
+			}
+			result = append(result, str)
+		}
+	}
+	return result
+}