github.com/stillson/go-wf@v0.0.0-20240502203501-5781d3fae028/main.go (about)

     1  /*
     2   * Copyright (c) 2024. Christopher Stillson <stillson@gmail.com>
     3   *
     4   * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
     5   *
     6   * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
     7   * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
     8   * Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
     9   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    10   */
    11  
    12  package main
    13  
    14  import (
    15  	"bufio"
    16  	"flag"
    17  	"fmt"
    18  	"os"
    19  	"time"
    20  
    21  	"github.com/stillson/go-wf/termui"
    22  
    23  	"github.com/fatih/color"
    24  	"github.com/stillson/go-wf/executor"
    25  	"github.com/stillson/go-wf/rcfile"
    26  	"github.com/stillson/go-wf/rcparse"
    27  )
    28  
    29  const (
    30  	VERSION = "0.0.2"
    31  )
    32  
    33  func vprint(verbose bool, printGreen bool, format string, inputs ...any) {
    34  	if !verbose {
    35  		return
    36  	}
    37  	if printGreen {
    38  		_, green := termui.GetColorPrints()
    39  		_, _ = green.Printf(format, inputs...)
    40  		return
    41  	}
    42  	fmt.Printf(format, inputs...)
    43  }
    44  
    45  func printRules(ourRcFile *rcparse.YRCfile) {
    46  	rules, err := ourRcFile.ListRules()
    47  	if err != nil {
    48  		_, _ = fmt.Fprintf(os.Stderr, "%v", err)
    49  		os.Exit(7)
    50  	}
    51  
    52  	for _, rule := range rules {
    53  		fmt.Printf("%s\n", rule)
    54  	}
    55  }
    56  
    57  func dumpRulesFile(f string, verb bool) {
    58  	red := color.New(color.FgHiRed)
    59  
    60  	var fp, err = os.Open(f) //nolint:gosec
    61  	if err != nil {
    62  		_, _ = red.Printf("Error reading rcfile:%v\n", err)
    63  		os.Exit(2)
    64  	}
    65  	defer func() {
    66  		_ = fp.Close()
    67  	}()
    68  
    69  	vprint(verb, false, "---\n")
    70  
    71  	scanner := bufio.NewScanner(fp)
    72  	for scanner.Scan() {
    73  		fmt.Println(scanner.Text())
    74  	}
    75  	err = scanner.Err()
    76  	if err != nil {
    77  		_, _ = red.Printf("error dumping file %v\n", err)
    78  	}
    79  }
    80  
    81  func ParseArgs() (*bool, *bool, *bool, *string, *bool) {
    82  	// flags
    83  	versionQ := flag.Bool("v", false, "Version of this program")
    84  	verboseQ := flag.Bool("V", false, "Verbose output")
    85  	timeQ := flag.Bool("t", false, "Time the command")
    86  	dumpQ := flag.Bool("d", false, "Dump contents of workflow file")
    87  	wfFile := flag.String("f", ".workflow.yaml", "Name of workflow file")
    88  	ruleQ := flag.Bool("r", false, "Print available rules")
    89  
    90  	flag.Parse()
    91  
    92  	if *versionQ {
    93  		fmt.Printf("wf version %v\n", VERSION)
    94  		os.Exit(0)
    95  	}
    96  	return verboseQ, timeQ, dumpQ, wfFile, ruleQ
    97  }
    98  
    99  func main() {
   100  	verboseQ, timeQ, dumpQ, wfFile, ruleQ := ParseArgs()
   101  
   102  	vprint(*verboseQ, false, "Verbose is on\n")
   103  	vprint(*timeQ && *verboseQ, false, "Timing enabled\n")
   104  	vprint(*dumpQ && *verboseQ, false, "Dumping workflow file\n")
   105  	vprint(*verboseQ, false, "File to search for: %s\n", *wfFile)
   106  
   107  	// set up colors
   108  	red, green := termui.GetColorPrints()
   109  
   110  	// get filename of rcfile
   111  	f, err := rcfile.GetRCFile(*wfFile)
   112  	if err != nil {
   113  		_, _ = red.Printf("Error getting rcfile:%v\n", err)
   114  		os.Exit(1)
   115  	}
   116  	vprint(*verboseQ, false, "Actual file found: %s\n", f)
   117  
   118  	if *dumpQ {
   119  		dumpRulesFile(f, *verboseQ)
   120  		return
   121  	}
   122  
   123  	ourRcFile, err := rcparse.NewYRCFile(f)
   124  	if err != nil {
   125  		_, _ = red.Printf("Error parsing rcfile:%v\n", err)
   126  		os.Exit(2)
   127  	}
   128  	vprint(*verboseQ, false, "\tRC: %v\n", ourRcFile)
   129  
   130  	if *ruleQ {
   131  		printRules(ourRcFile)
   132  		return
   133  	}
   134  
   135  	rule := flag.Arg(0)
   136  	vprint(*verboseQ, false, "rule is: %s\n", rule)
   137  
   138  	var now int64
   139  	if *timeQ {
   140  		now = time.Now().UnixMicro()
   141  		vprint(*verboseQ, true, "Start time: %v\n", now)
   142  	}
   143  
   144  	localExec := executor.NewLocalExec("main")
   145  	rv, err := localExec.Run(rule, ourRcFile)
   146  	if err != nil {
   147  		_, _ = red.Printf("%v\n", err)
   148  	}
   149  
   150  	if *timeQ {
   151  		end := time.Now().UnixMicro()
   152  		vprint(*verboseQ, true, "End time: %v\n", end)
   153  		_, _ = green.Printf("Total Time in µsecs: %v\n", end-now)
   154  	}
   155  
   156  	if rv != 0 {
   157  		_, _ = red.Printf("\nProcess exited with %v\n", rv)
   158  	}
   159  
   160  	os.Exit(rv)
   161  }