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v0.0.4
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link-navig
| Author | SHA1 | Date | |
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e42ad24999 | ||
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01465a08b7 | ||
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54c3776baf | ||
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ee1561c502 | ||
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| 333b9a366c |
23
README.md
23
README.md
@@ -63,19 +63,19 @@ rollup [command] [flags]
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Rollup can be configured using a YAML file. By default, it looks for `rollup.yml` in the current directory. You can specify a different configuration file using the `--config` flag.
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Example `rollup.yml`:
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**Scrape Configuration Parameters:**
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- `requests_per_second`: *(float, optional)* The rate at which requests are made per second during web scraping. Default is `1.0`.
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- `burst_limit`: *(integer, optional)* The maximum number of requests that can be made in a burst. Default is `5`.
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These parameters help control the request rate to avoid overloading the target servers and to comply with their rate limits.
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**Example `rollup.yml` with Scrape Configuration:**
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```yaml
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file_types:
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- go
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- md
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ignore:
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- node_modules/**
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- vendor/**
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- .git/**
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code_generated:
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- **/generated/**
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scrape:
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requests_per_second: 1.0
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burst_limit: 5
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sites:
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- base_url: https://example.com
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css_locator: .content
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@@ -94,9 +94,6 @@ scrape:
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css_locator: .special-content
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exclude_selectors:
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- .special-ads
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output_type: single
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requests_per_second: 1.0
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burst_limit: 3
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```
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## Examples
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179
cmd/web.go
179
cmd/web.go
@@ -2,11 +2,9 @@ package cmd
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import (
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"fmt"
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"io/ioutil"
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"io"
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"log"
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"net/url"
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"os"
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"regexp"
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"strings"
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"time"
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@@ -23,8 +21,6 @@ var (
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excludeSelectors []string
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)
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var scraperConfig scraper.Config
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var webCmd = &cobra.Command{
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Use: "web",
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Short: "Scrape main content from webpages and convert to Markdown",
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@@ -40,17 +36,28 @@ func init() {
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webCmd.Flags().StringSliceVar(&excludeSelectors, "exclude", []string{}, "CSS selectors to exclude from the extracted content (comma-separated)")
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}
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func validateScrapeConfig(scrapeConfig config.ScrapeConfig) error {
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if scrapeConfig.RequestsPerSecond <= 0 {
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return fmt.Errorf("requests_per_second must be greater than 0")
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}
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if scrapeConfig.BurstLimit <= 0 {
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return fmt.Errorf("burst_limit must be greater than 0")
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}
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return nil
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}
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func runWeb(cmd *cobra.Command, args []string) error {
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scraper.SetupLogger(verbose)
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logger := log.New(os.Stdout, "WEB: ", log.LstdFlags)
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if !verbose {
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logger.SetOutput(ioutil.Discard)
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logger.SetOutput(io.Discard)
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}
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logger.Printf("Starting web scraping process with verbose mode: %v", verbose)
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scraperConfig.Verbose = verbose
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// Prepare site configurations
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var siteConfigs []scraper.SiteConfig
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if len(cfg.Scrape.Sites) > 0 {
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// Use configurations from rollup.yml
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logger.Printf("Using configuration from rollup.yml for %d sites", len(cfg.Scrape.Sites))
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siteConfigs = make([]scraper.SiteConfig, len(cfg.Scrape.Sites))
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for i, site := range cfg.Scrape.Sites {
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@@ -65,10 +72,14 @@ func runWeb(cmd *cobra.Command, args []string) error {
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PathOverrides: convertPathOverrides(site.PathOverrides),
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}
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logger.Printf("Site %d configuration: BaseURL=%s, CSSLocator=%s, MaxDepth=%d, AllowedPaths=%v",
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i+1, site.BaseURL, site.CSSLocator, site.MaxDepth, site.AllowedPaths)
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i+1, site.BaseURL, site.CSSLocator, site.MaxDepth, site.AllowedPaths)
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}
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} else {
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logger.Printf("No sites defined in rollup.yml, falling back to URL-based configuration")
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// Use command-line URLs
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if len(urls) == 0 {
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logger.Println("Error: No URLs provided via --urls flag")
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return fmt.Errorf("no URLs provided. Use --urls flag with comma-separated URLs or set 'scrape.sites' in the rollup.yml file")
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}
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siteConfigs = make([]scraper.SiteConfig, len(urls))
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for i, u := range urls {
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siteConfigs[i] = scraper.SiteConfig{
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@@ -76,43 +87,34 @@ func runWeb(cmd *cobra.Command, args []string) error {
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CSSLocator: includeSelector,
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ExcludeSelectors: excludeSelectors,
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MaxDepth: depth,
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AllowedPaths: []string{"/"}, // Allow all paths by default
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}
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logger.Printf("URL %d configuration: BaseURL=%s, CSSLocator=%s, MaxDepth=%d",
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i+1, u, includeSelector, depth)
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i+1, u, includeSelector, depth)
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}
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}
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if len(siteConfigs) == 0 {
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logger.Println("Error: No sites or URLs provided")
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return fmt.Errorf("no sites or URLs provided. Use --urls flag with comma-separated URLs or set 'scrape.sites' in the rollup.yml file")
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}
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// Set default values for rate limiting
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defaultRequestsPerSecond := 1.0
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defaultBurstLimit := 3
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// Use default values if not set in the configuration
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requestsPerSecond := cfg.Scrape.RequestsPerSecond
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if requestsPerSecond == 0 {
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requestsPerSecond = defaultRequestsPerSecond
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}
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burstLimit := cfg.Scrape.BurstLimit
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if burstLimit == 0 {
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burstLimit = defaultBurstLimit
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}
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// Set up scraper configuration
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scraperConfig := scraper.Config{
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Sites: siteConfigs,
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OutputType: outputType,
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Verbose: verbose,
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Scrape: scraper.ScrapeConfig{
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RequestsPerSecond: requestsPerSecond,
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BurstLimit: burstLimit,
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RequestsPerSecond: cfg.Scrape.RequestsPerSecond,
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BurstLimit: cfg.Scrape.BurstLimit,
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},
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}
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logger.Printf("Scraper configuration: OutputType=%s, RequestsPerSecond=%f, BurstLimit=%d",
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outputType, requestsPerSecond, burstLimit)
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outputType, scraperConfig.Scrape.RequestsPerSecond, scraperConfig.Scrape.BurstLimit)
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// Validate scrape configuration
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err := validateScrapeConfig(cfg.Scrape)
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if err != nil {
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logger.Printf("Invalid scrape configuration: %v", err)
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return err
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}
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// Start scraping using scraper.ScrapeSites
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logger.Println("Starting scraping process")
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scrapedContent, err := scraper.ScrapeSites(scraperConfig)
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if err != nil {
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@@ -121,6 +123,7 @@ func runWeb(cmd *cobra.Command, args []string) error {
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}
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logger.Printf("Scraping completed. Total content scraped: %d", len(scrapedContent))
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// Write output to files
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if outputType == "single" {
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logger.Println("Writing content to a single file")
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return writeSingleFile(scrapedContent)
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@@ -139,7 +142,7 @@ func writeSingleFile(content map[string]string) error {
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defer file.Close()
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for url, c := range content {
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_, err = fmt.Fprintf(file, "# Content from %s\n\n%s\n\n---\n\n", url, c)
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_, err = fmt.Fprintf(file, "# ::: Content from %s\n\n%s\n\n---\n\n", url, c)
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if err != nil {
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return fmt.Errorf("error writing content to file: %v", err)
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}
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@@ -151,17 +154,13 @@ func writeSingleFile(content map[string]string) error {
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func writeMultipleFiles(content map[string]string) error {
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for url, c := range content {
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filename, err := getFilenameFromContent(c, url)
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if err != nil {
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return fmt.Errorf("error generating filename for %s: %v", url, err)
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}
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filename := sanitizeFilename(url) + ".rollup.md"
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file, err := os.Create(filename)
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if err != nil {
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return fmt.Errorf("error creating output file %s: %v", filename, err)
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}
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|
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_, err = file.WriteString(fmt.Sprintf("# Content from %s\n\n%s\n", url, c))
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_, err = file.WriteString(fmt.Sprintf("# ::: Content from %s\n\n%s\n", url, c))
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if err != nil {
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file.Close()
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return fmt.Errorf("error writing content to file %s: %v", filename, err)
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@@ -179,104 +178,14 @@ func generateDefaultFilename() string {
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return fmt.Sprintf("web-%s.rollup.md", timestamp)
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}
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func scrapeRecursively(urlStr string, depth int) (string, error) {
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visited := make(map[string]bool)
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return scrapeURL(urlStr, depth, visited)
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}
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func scrapeURL(urlStr string, depth int, visited map[string]bool) (string, error) {
|
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if depth < 0 || visited[urlStr] {
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return "", nil
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}
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visited[urlStr] = true
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content, err := testExtractAndConvertContent(urlStr)
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if err != nil {
|
||||
return "", err
|
||||
}
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|
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if depth > 0 {
|
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links, err := testExtractLinks(urlStr)
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if err != nil {
|
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return content, fmt.Errorf("error extracting links: %v", err)
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}
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|
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for _, link := range links {
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subContent, err := scrapeURL(link, depth-1, visited)
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if err != nil {
|
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fmt.Printf("Warning: Error scraping %s: %v\n", link, err)
|
||||
continue
|
||||
}
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content += "\n\n---\n\n" + subContent
|
||||
}
|
||||
}
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||||
|
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return content, nil
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}
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|
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var testExtractAndConvertContent = extractAndConvertContent
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var testExtractLinks = scraper.ExtractLinks
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func extractAndConvertContent(urlStr string) (string, error) {
|
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content, err := scraper.FetchWebpageContent(urlStr)
|
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if err != nil {
|
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return "", fmt.Errorf("error fetching webpage content: %v", err)
|
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}
|
||||
|
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if includeSelector != "" {
|
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content, err = scraper.ExtractContentWithCSS(content, includeSelector, excludeSelectors)
|
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if err != nil {
|
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return "", fmt.Errorf("error extracting content with CSS: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
markdown, err := scraper.ProcessHTMLContent(content, scraper.Config{})
|
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if err != nil {
|
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return "", fmt.Errorf("error processing HTML content: %v", err)
|
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}
|
||||
|
||||
parsedURL, err := url.Parse(urlStr)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("error parsing URL: %v", err)
|
||||
}
|
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header := fmt.Sprintf("# Content from %s\n\n", parsedURL.String())
|
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|
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return header + markdown + "\n\n", nil
|
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}
|
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|
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func getFilenameFromContent(content, urlStr string) (string, error) {
|
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// Try to extract title from content
|
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titleStart := strings.Index(content, "<title>")
|
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titleEnd := strings.Index(content, "</title>")
|
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if titleStart != -1 && titleEnd != -1 && titleEnd > titleStart {
|
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title := strings.TrimSpace(content[titleStart+7 : titleEnd])
|
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if title != "" {
|
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return sanitizeFilename(title) + ".rollup.md", nil
|
||||
}
|
||||
}
|
||||
|
||||
// If no title found or title is empty, use the URL
|
||||
parsedURL, err := url.Parse(urlStr)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("invalid URL: %v", err)
|
||||
}
|
||||
|
||||
if parsedURL.Host == "" {
|
||||
return "", fmt.Errorf("invalid URL: missing host")
|
||||
}
|
||||
|
||||
filename := parsedURL.Host
|
||||
if parsedURL.Path != "" && parsedURL.Path != "/" {
|
||||
filename += strings.TrimSuffix(parsedURL.Path, "/")
|
||||
}
|
||||
return sanitizeFilename(filename) + ".rollup.md", nil
|
||||
}
|
||||
|
||||
func sanitizeFilename(name string) string {
|
||||
// Remove any character that isn't alphanumeric, dash, or underscore
|
||||
reg := regexp.MustCompile("[^a-zA-Z0-9-_]+")
|
||||
name = reg.ReplaceAllString(name, "_")
|
||||
name = strings.Map(func(r rune) rune {
|
||||
if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9') || r == '-' || r == '_' {
|
||||
return r
|
||||
}
|
||||
return '_'
|
||||
}, name)
|
||||
|
||||
// Trim any leading or trailing underscores
|
||||
name = strings.Trim(name, "_")
|
||||
|
||||
@@ -103,7 +103,7 @@ func mockExtractAndConvertContent(urlStr string) (string, error) {
|
||||
return "Mocked content for " + urlStr, nil
|
||||
}
|
||||
|
||||
func mockExtractLinks(urlStr string) ([]string, error) {
|
||||
func mockExtractLinks() ([]string, error) {
|
||||
return []string{"http://example.com/link1", "http://example.com/link2"}, nil
|
||||
}
|
||||
|
||||
|
||||
@@ -30,6 +30,7 @@ type SiteConfig struct {
|
||||
ExcludePaths []string `yaml:"exclude_paths"`
|
||||
OutputAlias string `yaml:"output_alias"`
|
||||
PathOverrides []PathOverride `yaml:"path_overrides"`
|
||||
LinksContainerSelector string `yaml:"links_container_selector"`
|
||||
}
|
||||
|
||||
type PathOverride struct {
|
||||
@@ -50,6 +51,13 @@ func Load(configPath string) (*Config, error) {
|
||||
return nil, fmt.Errorf("error parsing config file: %v", err)
|
||||
}
|
||||
|
||||
// Set default values if they are zero or missing
|
||||
if config.Scrape.RequestsPerSecond <= 0 {
|
||||
config.Scrape.RequestsPerSecond = 1.0
|
||||
}
|
||||
if config.Scrape.BurstLimit <= 0 {
|
||||
config.Scrape.BurstLimit = 5
|
||||
}
|
||||
return &config, nil
|
||||
}
|
||||
|
||||
|
||||
@@ -45,10 +45,10 @@ scrape:
|
||||
}
|
||||
defer os.Remove(tmpfile.Name())
|
||||
|
||||
if _, err := tmpfile.Write(content); err != nil {
|
||||
if _, err = tmpfile.Write(content); err != nil {
|
||||
t.Fatalf("Failed to write to temp file: %v", err)
|
||||
}
|
||||
if err := tmpfile.Close(); err != nil {
|
||||
if err = tmpfile.Close(); err != nil {
|
||||
t.Fatalf("Failed to close temp file: %v", err)
|
||||
}
|
||||
|
||||
|
||||
@@ -1,21 +1,21 @@
|
||||
package scraper
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"io"
|
||||
"log"
|
||||
"math/rand"
|
||||
"net/url"
|
||||
"os"
|
||||
"regexp"
|
||||
"strings"
|
||||
"time"
|
||||
"sync"
|
||||
"context"
|
||||
"time"
|
||||
|
||||
md "github.com/JohannesKaufmann/html-to-markdown"
|
||||
"github.com/PuerkitoBio/goquery"
|
||||
"github.com/playwright-community/playwright-go"
|
||||
md "github.com/JohannesKaufmann/html-to-markdown"
|
||||
"golang.org/x/time/rate"
|
||||
)
|
||||
|
||||
@@ -50,6 +50,7 @@ type SiteConfig struct {
|
||||
ExcludePaths []string
|
||||
OutputAlias string
|
||||
PathOverrides []PathOverride
|
||||
LinksContainerSelector string
|
||||
}
|
||||
|
||||
// PathOverride holds path-specific overrides
|
||||
@@ -60,208 +61,280 @@ type PathOverride struct {
|
||||
}
|
||||
|
||||
func ScrapeSites(config Config) (map[string]string, error) {
|
||||
logger.Println("Starting ScrapeSites function - Verbose mode is active")
|
||||
results := make(chan struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
})
|
||||
logger.Println("Starting ScrapeSites function - Verbose mode is active")
|
||||
results := make(chan struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
})
|
||||
|
||||
limiter := rate.NewLimiter(rate.Limit(config.Scrape.RequestsPerSecond), config.Scrape.BurstLimit)
|
||||
logger.Printf("Rate limiter configured with %f requests per second and burst limit of %d\n", config.Scrape.RequestsPerSecond, config.Scrape.BurstLimit)
|
||||
// Ensure RequestsPerSecond and BurstLimit are valid
|
||||
if config.Scrape.RequestsPerSecond <= 0 {
|
||||
config.Scrape.RequestsPerSecond = 1.0
|
||||
}
|
||||
if config.Scrape.BurstLimit <= 0 {
|
||||
config.Scrape.BurstLimit = 5
|
||||
}
|
||||
|
||||
var wg sync.WaitGroup
|
||||
totalURLs := 0
|
||||
for _, site := range config.Sites {
|
||||
logger.Printf("Processing site: %s\n", site.BaseURL)
|
||||
wg.Add(1)
|
||||
go func(site SiteConfig) {
|
||||
defer wg.Done()
|
||||
for _, path := range site.AllowedPaths {
|
||||
fullURL := site.BaseURL + path
|
||||
totalURLs++
|
||||
logger.Printf("Queueing URL for scraping: %s\n", fullURL)
|
||||
scrapeSingleURL(fullURL, site, config, results, limiter)
|
||||
}
|
||||
}(site)
|
||||
}
|
||||
limiter := rate.NewLimiter(rate.Limit(config.Scrape.RequestsPerSecond), config.Scrape.BurstLimit)
|
||||
logger.Printf("Rate limiter configured with %f requests per second and burst limit of %d\n", config.Scrape.RequestsPerSecond, config.Scrape.BurstLimit)
|
||||
|
||||
go func() {
|
||||
wg.Wait()
|
||||
close(results)
|
||||
logger.Println("All goroutines completed, results channel closed")
|
||||
}()
|
||||
var wg sync.WaitGroup
|
||||
totalURLs := 0
|
||||
var mu sync.Mutex
|
||||
for _, site := range config.Sites {
|
||||
logger.Printf("Processing site: %s\n", site.BaseURL)
|
||||
wg.Add(1)
|
||||
go func(site SiteConfig) {
|
||||
defer wg.Done()
|
||||
visited := make(map[string]bool)
|
||||
for _, path := range site.AllowedPaths {
|
||||
fullURL := site.BaseURL + path
|
||||
mu.Lock()
|
||||
totalURLs++
|
||||
mu.Unlock()
|
||||
logger.Printf("Queueing URL for scraping: %s\n", fullURL)
|
||||
scrapeSingleURL(fullURL, site, results, limiter, visited, 0)
|
||||
}
|
||||
}(site)
|
||||
}
|
||||
|
||||
scrapedContent := make(map[string]string)
|
||||
for result := range results {
|
||||
if result.err != nil {
|
||||
logger.Printf("Error scraping %s: %v\n", result.url, result.err)
|
||||
continue
|
||||
}
|
||||
logger.Printf("Successfully scraped content from %s (length: %d)\n", result.url, len(result.content))
|
||||
scrapedContent[result.url] = result.content
|
||||
}
|
||||
go func() {
|
||||
wg.Wait()
|
||||
close(results)
|
||||
logger.Println("All goroutines completed, results channel closed")
|
||||
}()
|
||||
|
||||
logger.Printf("Total URLs processed: %d\n", totalURLs)
|
||||
logger.Printf("Successfully scraped content from %d URLs\n", len(scrapedContent))
|
||||
scrapedContent := make(map[string]string)
|
||||
for result := range results {
|
||||
if result.err != nil {
|
||||
logger.Printf("Error scraping %s: %v\n", result.url, result.err)
|
||||
continue
|
||||
}
|
||||
logger.Printf("Successfully scraped content from %s (length: %d)\n", result.url, len(result.content))
|
||||
scrapedContent[result.url] = result.content
|
||||
}
|
||||
|
||||
return scrapedContent, nil
|
||||
logger.Printf("Total URLs processed: %d\n", totalURLs)
|
||||
logger.Printf("Successfully scraped content from %d URLs\n", len(scrapedContent))
|
||||
|
||||
return scrapedContent, nil
|
||||
}
|
||||
|
||||
func scrapeSingleURL(url string, site SiteConfig, config Config, results chan<- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}, limiter *rate.Limiter) {
|
||||
logger.Printf("Starting to scrape URL: %s\n", url)
|
||||
func scrapeSingleURL(url string, site SiteConfig, results chan<- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}, limiter *rate.Limiter, visited map[string]bool, currentDepth int) {
|
||||
if site.MaxDepth > 0 && currentDepth > site.MaxDepth {
|
||||
return
|
||||
}
|
||||
|
||||
// Wait for rate limiter before making the request
|
||||
err := limiter.Wait(context.Background())
|
||||
if err != nil {
|
||||
logger.Printf("Rate limiter error for %s: %v\n", url, err)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", fmt.Errorf("rate limiter error: %v", err)}
|
||||
return
|
||||
}
|
||||
if visited[url] {
|
||||
return
|
||||
}
|
||||
visited[url] = true
|
||||
|
||||
cssLocator, excludeSelectors := getOverrides(url, site)
|
||||
logger.Printf("Using CSS locator for %s: %s\n", url, cssLocator)
|
||||
logger.Printf("Exclude selectors for %s: %v\n", url, excludeSelectors)
|
||||
logger.Printf("Starting to scrape URL: %s\n", url)
|
||||
|
||||
content, err := scrapeURL(url, cssLocator, excludeSelectors)
|
||||
if err != nil {
|
||||
logger.Printf("Error scraping %s: %v\n", url, err)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", err}
|
||||
return
|
||||
}
|
||||
// Wait for rate limiter before making the request
|
||||
err := limiter.Wait(context.Background())
|
||||
if err != nil {
|
||||
logger.Printf("Rate limiter error for %s: %v\n", url, err)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", fmt.Errorf("rate limiter error: %v", err)}
|
||||
return
|
||||
}
|
||||
|
||||
if content == "" {
|
||||
logger.Printf("Warning: Empty content scraped from %s\n", url)
|
||||
} else {
|
||||
logger.Printf("Successfully scraped content from %s (length: %d)\n", url, len(content))
|
||||
}
|
||||
content, err := FetchWebpageContent(url)
|
||||
if err != nil {
|
||||
logger.Printf("Error fetching content for %s: %v\n", url, err)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", err}
|
||||
return
|
||||
}
|
||||
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, content, nil}
|
||||
doc, err := goquery.NewDocumentFromReader(strings.NewReader(content))
|
||||
if err != nil {
|
||||
logger.Printf("Error parsing HTML for %s: %v\n", url, err)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", fmt.Errorf("error parsing HTML: %v", err)}
|
||||
return
|
||||
}
|
||||
|
||||
if site.LinksContainerSelector != "" {
|
||||
logger.Printf("Processing links container for %s\n", url)
|
||||
linkContainers := doc.Find(site.LinksContainerSelector)
|
||||
linkContainers.Each(func(i int, container *goquery.Selection) {
|
||||
container.Find("a[href]").Each(func(j int, link *goquery.Selection) {
|
||||
href, exists := link.Attr("href")
|
||||
if exists {
|
||||
resolvedURL := resolveURL(href, url)
|
||||
if isAllowedURL(resolvedURL, site) && !visited[resolvedURL] {
|
||||
go scrapeSingleURL(resolvedURL, site, results, limiter, visited, currentDepth+1)
|
||||
}
|
||||
}
|
||||
})
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
cssLocator, excludeSelectors := getOverrides(url, site)
|
||||
logger.Printf("Using CSS locator for %s: %s\n", url, cssLocator)
|
||||
logger.Printf("Exclude selectors for %s: %v\n", url, excludeSelectors)
|
||||
|
||||
extractedContent, err := ExtractContentWithCSS(content, cssLocator, excludeSelectors)
|
||||
if err != nil {
|
||||
logger.Printf("Error extracting content for %s: %v\n", url, err)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", err}
|
||||
return
|
||||
}
|
||||
|
||||
if extractedContent == "" {
|
||||
logger.Printf("Warning: Empty content scraped from %s\n", url)
|
||||
} else {
|
||||
logger.Printf("Successfully scraped content from %s (length: %d)\n", url, len(extractedContent))
|
||||
}
|
||||
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, extractedContent, nil}
|
||||
}
|
||||
|
||||
func scrapeSite(site SiteConfig, config Config, results chan<- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}, limiter *rate.Limiter) {
|
||||
visited := make(map[string]bool)
|
||||
queue := []string{site.BaseURL}
|
||||
func scrapeSite(site SiteConfig, results chan<- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}, limiter *rate.Limiter,
|
||||
) {
|
||||
visited := make(map[string]bool)
|
||||
queue := []string{site.BaseURL}
|
||||
|
||||
for len(queue) > 0 {
|
||||
url := queue[0]
|
||||
queue = queue[1:]
|
||||
for len(queue) > 0 {
|
||||
url := queue[0]
|
||||
queue = queue[1:]
|
||||
|
||||
if visited[url] {
|
||||
continue
|
||||
}
|
||||
visited[url] = true
|
||||
if visited[url] {
|
||||
continue
|
||||
}
|
||||
visited[url] = true
|
||||
|
||||
if !isAllowedURL(url, site) {
|
||||
continue
|
||||
}
|
||||
if !isAllowedURL(url, site) {
|
||||
continue
|
||||
}
|
||||
|
||||
// Wait for rate limiter before making the request
|
||||
err := limiter.Wait(context.Background())
|
||||
if err != nil {
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", fmt.Errorf("rate limiter error: %v", err)}
|
||||
continue
|
||||
}
|
||||
// Wait for rate limiter before making the request
|
||||
err := limiter.Wait(context.Background())
|
||||
if err != nil {
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, "", fmt.Errorf("rate limiter error: %v", err)}
|
||||
continue
|
||||
}
|
||||
|
||||
cssLocator, excludeSelectors := getOverrides(url, site)
|
||||
content, err := scrapeURL(url, cssLocator, excludeSelectors)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, content, err}
|
||||
cssLocator, excludeSelectors := getOverrides(url, site)
|
||||
content, err := scrapeURL(url, cssLocator, excludeSelectors)
|
||||
results <- struct {
|
||||
url string
|
||||
content string
|
||||
err error
|
||||
}{url, content, err}
|
||||
|
||||
if len(visited) < site.MaxDepth {
|
||||
links, _ := ExtractLinks(url)
|
||||
for _, link := range links {
|
||||
if !visited[link] && isAllowedURL(link, site) {
|
||||
queue = append(queue, link)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if len(visited) < site.MaxDepth {
|
||||
links, _ := ExtractLinks(url)
|
||||
for _, link := range links {
|
||||
if !visited[link] && isAllowedURL(link, site) {
|
||||
queue = append(queue, link)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func isAllowedURL(urlStr string, site SiteConfig) bool {
|
||||
parsedURL, err := url.Parse(urlStr)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
parsedURL, err := url.Parse(urlStr)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
baseURL, _ := url.Parse(site.BaseURL)
|
||||
if parsedURL.Host != baseURL.Host {
|
||||
return false
|
||||
}
|
||||
baseURL, _ := url.Parse(site.BaseURL)
|
||||
if parsedURL.Host != baseURL.Host {
|
||||
return false
|
||||
}
|
||||
|
||||
path := parsedURL.Path
|
||||
for _, allowedPath := range site.AllowedPaths {
|
||||
if strings.HasPrefix(path, allowedPath) {
|
||||
for _, excludePath := range site.ExcludePaths {
|
||||
if strings.HasPrefix(path, excludePath) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
}
|
||||
path := parsedURL.Path
|
||||
|
||||
// Check if the URL is within allowed paths
|
||||
if len(site.AllowedPaths) > 0 {
|
||||
allowed := false
|
||||
for _, allowedPath := range site.AllowedPaths {
|
||||
if strings.HasPrefix(path, allowedPath) {
|
||||
allowed = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !allowed {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
// Check if the URL is in excluded paths
|
||||
for _, excludePath := range site.ExcludePaths {
|
||||
if strings.HasPrefix(path, excludePath) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
func getOverrides(urlStr string, site SiteConfig) (string, []string) {
|
||||
parsedURL, _ := url.Parse(urlStr)
|
||||
path := parsedURL.Path
|
||||
parsedURL, _ := url.Parse(urlStr)
|
||||
path := parsedURL.Path
|
||||
|
||||
for _, override := range site.PathOverrides {
|
||||
if strings.HasPrefix(path, override.Path) {
|
||||
if override.CSSLocator != "" {
|
||||
return override.CSSLocator, override.ExcludeSelectors
|
||||
}
|
||||
return site.CSSLocator, override.ExcludeSelectors
|
||||
}
|
||||
}
|
||||
for _, override := range site.PathOverrides {
|
||||
if strings.HasPrefix(path, override.Path) {
|
||||
if override.CSSLocator != "" {
|
||||
return override.CSSLocator, override.ExcludeSelectors
|
||||
}
|
||||
return site.CSSLocator, override.ExcludeSelectors
|
||||
}
|
||||
}
|
||||
|
||||
return site.CSSLocator, site.ExcludeSelectors
|
||||
return site.CSSLocator, site.ExcludeSelectors
|
||||
}
|
||||
|
||||
func scrapeURL(url, cssLocator string, excludeSelectors []string) (string, error) {
|
||||
content, err := FetchWebpageContent(url)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
content, err := FetchWebpageContent(url)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if cssLocator != "" {
|
||||
content, err = ExtractContentWithCSS(content, cssLocator, excludeSelectors)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
if cssLocator != "" {
|
||||
content, err = ExtractContentWithCSS(content, cssLocator, excludeSelectors)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
|
||||
return ProcessHTMLContent(content, Config{})
|
||||
return ProcessHTMLContent(content, Config{})
|
||||
}
|
||||
|
||||
func getFilenameFromContent(content, url string) string {
|
||||
@@ -296,7 +369,7 @@ func SetupLogger(verbose bool) {
|
||||
if verbose {
|
||||
logger = log.New(os.Stdout, "SCRAPER: ", log.LstdFlags)
|
||||
} else {
|
||||
logger = log.New(ioutil.Discard, "", 0)
|
||||
logger = log.New(io.Discard, "", 0)
|
||||
}
|
||||
}
|
||||
|
||||
@@ -387,7 +460,9 @@ func FetchWebpageContent(urlStr string) (string, error) {
|
||||
}
|
||||
|
||||
logger.Println("Waiting for body element")
|
||||
_, err = page.WaitForSelector("body", playwright.PageWaitForSelectorOptions{
|
||||
|
||||
bodyElement := page.Locator("body")
|
||||
err = bodyElement.WaitFor(playwright.LocatorWaitForOptions{
|
||||
State: playwright.WaitForSelectorStateVisible,
|
||||
})
|
||||
if err != nil {
|
||||
@@ -404,7 +479,7 @@ func FetchWebpageContent(urlStr string) (string, error) {
|
||||
|
||||
if content == "" {
|
||||
logger.Println(" content is empty, falling back to body content")
|
||||
content, err = page.InnerHTML("body")
|
||||
content, err = bodyElement.InnerHTML()
|
||||
if err != nil {
|
||||
logger.Printf("Error getting body content: %v\n", err)
|
||||
return "", fmt.Errorf("could not get body content: %v", err)
|
||||
@@ -457,6 +532,8 @@ func scrollPage(page playwright.Page) error {
|
||||
() => {
|
||||
window.scrollTo(0, document.body.scrollHeight);
|
||||
return document.body.scrollHeight;
|
||||
// wait for 500 ms
|
||||
new Promise(resolve => setTimeout(resolve, 500));
|
||||
}
|
||||
`
|
||||
|
||||
@@ -488,7 +565,9 @@ func scrollPage(page playwright.Page) error {
|
||||
|
||||
previousHeight = currentHeight
|
||||
|
||||
page.WaitForTimeout(500)
|
||||
// Wait for a while before scrolling again
|
||||
|
||||
|
||||
}
|
||||
|
||||
logger.Println("Scrolling back to top")
|
||||
@@ -584,3 +663,14 @@ func ExtractContentWithCSS(content, includeSelector string, excludeSelectors []s
|
||||
logger.Printf("Extracted content length: %d\n", len(selectedContent))
|
||||
return selectedContent, nil
|
||||
}
|
||||
func resolveURL(href, base string) string {
|
||||
parsedBase, err := url.Parse(base)
|
||||
if err != nil {
|
||||
return href
|
||||
}
|
||||
parsedHref, err := url.Parse(href)
|
||||
if err != nil {
|
||||
return href
|
||||
}
|
||||
return parsedBase.ResolveReference(parsedHref).String()
|
||||
}
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
package scraper
|
||||
|
||||
import (
|
||||
"testing"
|
||||
"io"
|
||||
"log"
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"strings"
|
||||
"reflect"
|
||||
"log"
|
||||
"io/ioutil"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestIsAllowedURL(t *testing.T) {
|
||||
@@ -51,9 +51,9 @@ func TestGetOverrides(t *testing.T) {
|
||||
}
|
||||
|
||||
tests := []struct {
|
||||
url string
|
||||
expectedLocator string
|
||||
expectedExcludes []string
|
||||
url string
|
||||
expectedLocator string
|
||||
expectedExcludes []string
|
||||
}{
|
||||
{"https://example.com/normal", "main", []string{".ads"}},
|
||||
{"https://example.com/special", ".special-content", []string{".sidebar"}},
|
||||
@@ -73,7 +73,7 @@ func TestGetOverrides(t *testing.T) {
|
||||
|
||||
func TestExtractContentWithCSS(t *testing.T) {
|
||||
// Initialize logger for testing
|
||||
logger = log.New(ioutil.Discard, "", 0)
|
||||
logger = log.New(io.Discard, "", 0)
|
||||
|
||||
html := `
|
||||
<html>
|
||||
|
||||
Reference in New Issue
Block a user