diff options
| -rw-r--r-- | TODO | 10 | ||||
| -rw-r--r-- | getgbook.c | 53 |
2 files changed, 47 insertions, 16 deletions
@@ -1 +1,11 @@ use order to be able to use real page numbers (getpagecode) + to find this advance through click3 letter by letter until either } (none found) or strcmp "order" + + +# once it is basically working # + +to be fast and efficient it's best to crank through all the json 1st, filling in an array of page structs as we go + this requires slightly fuller json support + could consider making a json reading module, ala confoo, to make ad-hoc memory structures from json + +to be super fast we could have 2 threads, one filling the pages structs and one consuming them. this would complicate the code rather, though @@ -1,5 +1,11 @@ /* See COPYING file for copyright, license and warranty details. */ +/* NOTE: there's now a new api that returns json. + * it requires https, which we don't yet support. + * https://www.googleapis.com/books/v1/volumes?q=isbn:1589235126 + * https://www.googleapis.com/books/v1/volumes/jglfL_eVG4cC */ + + #define VERSION "prealpha" #include <stdio.h> @@ -19,35 +25,24 @@ #define BOOKID_LEN 12 typedef struct { - char *name; - char *code; -} pgtype; - -pgtype pgtypes[] = { - {"cover", "PP"}, - {"preface", "PR"}, - {"page", "PA"}, - {"postface", "PA"}, -}; + int num; + char url[URLMAX]; + char name[80]; +} page; char *getbookid(char *isbn) { char url[URLMAX]; char *buf, *bookid, *c; - /* NOTE: new api returns json, and looks like this: - * http://www.googleapis.com/books/v1/volumes?q=isbn:1589235126 - * (this needs https, which we don't yet support) */ - snprintf(url, URLMAX, "/books/feeds/volumes?q=isbn:%s", isbn); - bookid = malloc(sizeof(char *) * BOOKID_LEN); - if(!get("books.google.com", url, &buf)) return NULL; if((c = strstr(buf,"<dc:identifier>")) == NULL) return NULL; + bookid = malloc(sizeof(char *) * BOOKID_LEN); strncpy(bookid, c+15, BOOKID_LEN); bookid[BOOKID_LEN] = '\0'; free(buf); @@ -55,6 +50,27 @@ char *getbookid(char *isbn) return bookid; } +int gettotalpages(char *bookid) +{ + char url[URLMAX]; + char *buf, *c; + int total; + + snprintf(url, URLMAX, "/books/feeds/volumes/%s", bookid); + + bookid = malloc(sizeof(char *) * BOOKID_LEN); + + if(!get("books.google.com", url, &buf)) + return 0; + + if((c = strstr(buf," pages</dc:format>")) == NULL) + return 0; + while(*c && *c != '>') *c--; + sscanf(c+1, "%d ", &total); + + return total; +} + char *getpageurl(char *bookid, char *pg) { char url[URLMAX]; @@ -88,6 +104,7 @@ char *getpageurl(char *bookid, char *pg) int main(int argc, char *argv[]) { char *bookid, *url, pg[16]; + int totalpages; if(argc < 2 || argc > 3) die(usage); @@ -103,6 +120,10 @@ int main(int argc, char *argv[]) if((bookid = getbookid(argv[1])) == NULL) die("Could not find book\n"); + if(!(totalpages = gettotalpages(bookid))) + die("Book has no pages\n"); + printf("Book has %d pages\n", totalpages); + strncpy(pg, "PA2", 12); if((url = getpageurl(bookid, pg)) == NULL) fprintf(stderr, "Could not find page %s\n", pg); |