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project home | /[freewrt]/branches/common-nfo/tools/nfotiser/parser.c
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Diff of /branches/common-nfo/tools/nfotiser/parser.c

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revision 3453 by tg, Thu Aug 9 11:22:16 2007 UTC revision 3454 by tg, Thu Aug 9 12:04:34 2007 UTC
# Line 87  nfo_parse(int fd, const struct parser_ke Line 87  nfo_parse(int fd, const struct parser_ke
87  {  {
88          struct parser_result *res;          struct parser_result *res;
89          struct parser_res *entry;          struct parser_res *entry;
90          char ch, *cp, *t, *buf;          char ch, *cp, *t, *buf, *buf_base;
91          size_t len, n;          size_t len, n;
92          struct stat sb;          struct stat sb;
93    
# Line 102  nfo_parse(int fd, const struct parser_ke Line 102  nfo_parse(int fd, const struct parser_ke
102              == MAP_FAILED)              == MAP_FAILED)
103                  err(255, "cannot mmap %zu bytes", len);                  err(255, "cannot mmap %zu bytes", len);
104          /* make a nice NUL-terminated copy (malloc'd) */          /* make a nice NUL-terminated copy (malloc'd) */
105          buf = str_nsave(cp, len);          buf = buf_base = str_nsave(cp, len);
106          if (munmap(cp, len))          if (munmap(cp, len))
107                  err(255, "cannot munmap");                  err(255, "cannot munmap");
108          /* don't need the file any more */          /* don't need the file any more */
109          close(fd);          close(fd);
110    
111          /* now we can operate on the NUL-terminated R/W string “buf” */          /* now we can operate on the NUL-terminated R/W string “buf” */
112            if (buf[len - 1] != '\n')
113                    errx(1, "syntax error: file does not end with a newline!");
114    
115     loop_newline:
116            /* completely new line buffer */
117            cp = NULL;
118    
119     loop_getline:
120            /* get a line and add it to line buffer */
121            if (*buf == '\0')
122                    goto eof;
123            if (*buf == '\n') {
124                    ++buf;
125                    goto loop_getline;
126            }
127            if (*buf == '#') {
128                    while (*buf != '\n')
129                            ++buf;
130                    goto loop_getline;
131            }
132            if (*buf == '\t') {
133                    if (cp == NULL)
134                            errx(1, "syntax error: expected lead line,"
135                                " got trail line!");
136                    t = ++buf;
137     loop_storeline:
138                    while (*t != '\n')
139                            ++t;
140                    t = str_nsave(buf, t - buf + /* NL */ 1);
141                    goto loop_addline;
142            }
143            if (cp != NULL)
144                    goto process_line;
145            if ((*buf >= 'A' && *buf <= 'Z') ||
146                (*buf >= 'a' && *buf <= 'z') || *buf == '_') {
147                    t = buf;
148                    goto loop_storeline;
149            }
150            errx(1, "syntax error: line must begin with letter or underscore!");
151     loop_addline:
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