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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 3458 by tg, Thu Aug 9 13:40:07 2007 UTC revision 3459 by tg, Thu Aug 9 13:50:32 2007 UTC
# Line 89  nfo_parse(int fd, const struct parser_ke Line 89  nfo_parse(int fd, const struct parser_ke
89          struct parser_res *entry;          struct parser_res *entry;
90          const struct parser_keywords *kwp;          const struct parser_keywords *kwp;
91          char *cp, *t, *tp, *buf, *buf_base;          char *cp, *t, *tp, *buf, *buf_base;
92          size_t len, n;          size_t len, n, lineno;
93          struct stat sb;          struct stat sb;
94          char *entry_multi;          char *entry_multi;
95          unsigned entry_iter;          unsigned entry_iter;
# Line 101  nfo_parse(int fd, const struct parser_ke Line 101  nfo_parse(int fd, const struct parser_ke
101                  err(255, "cannot stat");                  err(255, "cannot stat");
102    
103          /* slurp whole file into mapped memory */          /* slurp whole file into mapped memory */
104          if ((cp = mmap(NULL, (len = sb.st_size), PROT_READ, MAP_FILE, fd, 0))          len = sb.st_size;
105              == MAP_FAILED)          D(2, "trying to mmap %zu bytes...", len);
106            if ((cp = mmap(NULL, len, PROT_READ, MAP_FILE, fd, 0)) == MAP_FAILED)
107                  err(255, "cannot mmap %zu bytes", len);                  err(255, "cannot mmap %zu bytes", len);
108            D(2, "ok\n");
109          /* make a nice NUL-terminated copy (malloc'd) */          /* make a nice NUL-terminated copy (malloc'd) */
110            D(2, "copying %zu bytes...", len);
111          buf = buf_base = str_nsave(cp, len);          buf = buf_base = str_nsave(cp, len);
112            D(2, " munmap...");
113          if (munmap(cp, len))          if (munmap(cp, len))
114                  err(255, "cannot munmap");                  err(255, "cannot munmap");
115            D(2, "ok\n");
116          /* don't need the file any more */          /* don't need the file any more */
117    
118          /* now we can operate on the NUL-terminated R/W string “buf” */          /* now we can operate on the NUL-terminated R/W string “buf” */
119          if (buf[len - 1] != '\n')          if (buf[len - 1] != '\n')
120                  errx(1, "syntax error: file does not end with a newline!");                  errx(1, "syntax error: file does not end with a newline!");
121    
122            D(2, "entire string: «%s» (%zu)\n", buf, strlen(buf));
123            lineno = 1;
124    
125   loop_newline:   loop_newline:
126          /* completely new line buffer */          /* completely new line buffer */
127          cp = NULL;          cp = NULL;
128    
129   loop_getline:   loop_getline:
130          /* get a line and add it to line buffer */          /* get a line and add it to line buffer */
131          if (*buf == '\0')          if (*buf == '\0') {
132                    D(2, "D: [%4zu] read EOF\n", lineno);
133                  goto loop_eof;                  goto loop_eof;
134            }
135          if (*buf == '\n') {          if (*buf == '\n') {
136                    D(2, "D: [%4zu] read newline\n", lineno);
137                  ++buf;                  ++buf;
138                    ++lineno;
139                  goto loop_getline;                  goto loop_getline;
140          }          }
141          if (*buf == '#') {          if (*buf == '#') {
142                  while (*buf != '\n')                  D(2, "D: [%4zu] read comment ", lineno);
143                          ++buf;                  t = buf;
144                    while (*t != '\n')
145                            ++t;
146                    *t++ = '\0';
147                    D(2, "'%s'\n", buf);
148                    buf = t;
149                    ++lineno;
150                  goto loop_getline;                  goto loop_getline;
151          }          }
152          if (*buf == '\t') {          if (*buf == '\t') {
153                    D(2, "D: [%4zu] read trail line\n", lineno);
154                  if (cp == NULL)                  if (cp == NULL)
155                          errx(1, "syntax error: expected lead line,"                          errx(1, "syntax error: expected lead line,"
156                              " got trail line!");                              " got trail line!");
157                  t = ++buf;                  t = ++buf;
158                  goto loop_storeline;                  goto loop_storeline;
159            } else {
160                    D(2, "D: [%4zu] read head line (%02X)\n", lineno, *buf);
161          }          }
162          if (cp != NULL)          if (cp != NULL)
163                  goto process_line;                  goto process_line;
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  Added in v.3459
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