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authorPřemysl Eric Janouch <p@janouch.name>2020-09-21 19:00:37 +0200
committerPřemysl Eric Janouch <p@janouch.name>2020-09-21 19:26:55 +0200
commit8f542c71208b1944979b2e50ad1a328aab98f230 (patch)
treed5344be3420be7c8272cf854cacfc9615b8f6533
parentea8c59961cf4b1d1ee72f6c364bff460462f2447 (diff)
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hswg: execute a template given on standard input
So that information can be extracted from documents easily.
-rw-r--r--hswg/main.go58
1 files changed, 38 insertions, 20 deletions
diff --git a/hswg/main.go b/hswg/main.go
index b8e6e40..fef3278 100644
--- a/hswg/main.go
+++ b/hswg/main.go
@@ -6,6 +6,7 @@ import (
"bytes"
"encoding/xml"
"fmt"
+ "html/template"
"io"
"io/ioutil"
"log"
@@ -127,13 +128,14 @@ func Render(r io.Reader, config configuration.Configuration) (
return
}
-// entry contains all context information about a single page.
-type entry struct {
- path string // path
- mtime time.Time // modification time
- metadata Metadata // metadata
- document []byte // inner document with expanded LinkWords
- backlinks []string // what documents link back here
+// Entry contains all context information about a single page.
+type Entry struct {
+ PathSource string // path to source AsciiDoc
+ PathDestination string // path to destination HTML
+ mtime time.Time // modification time
+ Metadata Metadata // metadata
+ document []byte // inner document with expanded LinkWords
+ backlinks []string // what documents link back here
}
var extRE = regexp.MustCompile(`\.[^/.]*$`)
@@ -149,17 +151,17 @@ func resultPath(path string) string {
return path + ".html"
}
-func makeLink(m *map[string]*entry, name string) string {
+func makeLink(m *map[string]*Entry, name string) string {
e := (*m)[name]
- return fmt.Sprintf("<a href='%s'>%s</a>", resultPath(e.path), name)
+ return fmt.Sprintf("<a href='%s'>%s</a>", e.PathDestination, name)
}
var linkWordRE = regexp.MustCompile(`\b\p{Lu}\p{L}*\b`)
-func expand(m *map[string]*entry, name string, chunk []byte) []byte {
+func expand(m *map[string]*Entry, name string, chunk []byte) []byte {
return linkWordRE.ReplaceAllFunc(chunk, func(match []byte) []byte {
if link, ok := (*m)[string(match)]; ok && string(match) != name &&
- !link.metadata.IsDraft() {
+ !link.Metadata.IsDraft() {
link.backlinks = append(link.backlinks, name)
return []byte(makeLink(m, string(match)))
}
@@ -195,7 +197,7 @@ func main() {
}
// Create a map from document names to their page entries.
- entries := map[string]*entry{}
+ entries := map[string]*Entry{}
for _, glob := range os.Args[2:] {
matches, err := filepath.Glob(glob)
if err != nil {
@@ -204,15 +206,18 @@ func main() {
for _, path := range matches {
name := stripExtension(filepath.Base(path))
if conflict, ok := entries[name]; ok {
- log.Fatalf("%s: conflicts with %s\n", name, conflict.path)
+ log.Fatalf("%s: conflicts with %s\n", name, conflict.PathSource)
+ }
+ entries[name] = &Entry{
+ PathSource: path,
+ PathDestination: resultPath(path),
}
- entries[name] = &entry{path: path}
}
}
tagRE := regexp.MustCompile(`<[^<>]+>`)
for name, e := range entries {
- f, err := os.Open(e.path)
+ f, err := os.Open(e.PathSource)
if err != nil {
log.Fatalln(err)
}
@@ -224,8 +229,8 @@ func main() {
}
var html *bytes.Buffer
- if html, e.metadata, err = Render(f, configuration.NewConfiguration(
- configuration.WithFilename(e.path),
+ if html, e.Metadata, err = Render(f, configuration.NewConfiguration(
+ configuration.WithFilename(e.PathSource),
configuration.WithLastUpdated(e.mtime),
)); err != nil {
log.Fatalln(err)
@@ -243,15 +248,16 @@ func main() {
e.document = expanded.Bytes()
}
+ // TODO(p): These should be run through html/template.
for name, e := range entries {
- f, err := os.Create(resultPath(e.path))
+ f, err := os.Create(e.PathDestination)
if err != nil {
log.Fatalln(err)
}
_, _ = f.Write(header)
- title := e.metadata.Title
+ title := e.Metadata.Title
if title == "" {
title = name
}
@@ -277,6 +283,18 @@ func main() {
_, _ = f.Write(e.document)
_, _ = f.WriteString(fmt.Sprintf("<p id=footer>Last updated: %s"+
" &mdash; <a href='%s'>Source</p>\n",
- e.metadata.LastUpdated, e.path))
+ e.Metadata.LastUpdated, e.PathSource))
+ }
+
+ // Execute a template from the standard input.
+ var input []byte
+ if input, err = ioutil.ReadAll(os.Stdin); err != nil {
+ log.Fatalln(err)
+ }
+
+ // TODO(p): Splitting content to categories would be nice.
+ t, err := template.New("-").Parse(string(input))
+ if err = t.Execute(os.Stdout, entries); err != nil {
+ log.Fatalln(err)
}
}