Factor out parse_keydef() into addkeydef() and reorder functions
Add a small comment explaining the data-structure and sort the functions according to usage, not alphabetically.
This commit is contained in:
FRIGN
sin
parent
e00cdf226a
commit
61ee561728
153
sort.c
153
sort.c
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@ -26,11 +26,10 @@ enum {
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static TAILQ_HEAD(kdhead, keydef) kdhead = TAILQ_HEAD_INITIALIZER(kdhead);
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static void addkeydef(char *, int);
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static void check(FILE *);
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static int linecmp(const char **, const char **);
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static int parse_flags(char **, int *, int);
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static int parse_keydef(struct keydef *, char *, int);
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static void addkeydef(char *, int);
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static int linecmp(const char **, const char **);
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static void check(FILE *);
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static char *skipblank(char *);
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static char *skipnonblank(char *);
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static char *skipcolumn(char *, char *, int);
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@ -41,37 +40,71 @@ static char *fieldsep = NULL;
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static char *col1, *col2;
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static size_t col1siz, col2siz;
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static int
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parse_flags(char **s, int *flags, int bflag)
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{
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while (isalpha((int)**s)) {
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switch (*((*s)++)) {
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case 'b':
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*flags |= bflag;
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break;
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case 'n':
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*flags |= MOD_N;
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break;
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case 'r':
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*flags |= MOD_R;
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break;
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default:
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return -1;
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}
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}
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return 0;
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}
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static void
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addkeydef(char *kdstr, int flags)
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{
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struct keydef *kd;
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kd = enmalloc(2, sizeof(*kd));
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if (parse_keydef(kd, kdstr, flags))
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enprintf(2, "faulty key definition\n");
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/* parse key definition kdstr with format
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* start_column[.start_char][flags][,end_column[.end_char][flags]]
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*/
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kd->start_column = 1;
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kd->start_char = 1;
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kd->end_column = 0; /* 0 means end of line */
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kd->end_char = 0; /* 0 means end of column */
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kd->flags = flags;
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if ((kd->start_column = strtol(kdstr, &kdstr, 10)) < 1)
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enprintf(2, "invalid start column in key definition\n");
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if (*kdstr == '.') {
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if ((kd->start_char = strtol(kdstr + 1, &kdstr, 10)) < 1)
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enprintf(2, "invalid start character in key definition\n");
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}
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if (parse_flags(&kdstr, &kd->flags, MOD_STARTB) < 0)
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enprintf(2, "invalid start flags in key definition\n");
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if (*kdstr == ',') {
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if ((kd->end_column = strtol(kdstr + 1, &kdstr, 10)) < 0)
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enprintf(2, "invalid end column in key definition\n");
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if (*kdstr == '.') {
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if ((kd->end_char = strtol(kdstr + 1, &kdstr, 10)) < 0)
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enprintf(2, "invalid end character in key definition\n");
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}
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if (parse_flags(&kdstr, &kd->flags, MOD_ENDB) < 0)
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enprintf(2, "invalid end flags in key definition\n");
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}
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if (*kdstr != '\0')
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enprintf(2, "invalid key definition\n");
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TAILQ_INSERT_TAIL(&kdhead, kd, entry);
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}
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static void
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check(FILE *fp)
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{
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static struct { char *buf; size_t size; } prev, cur, tmp;
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if (!prev.buf && getline(&prev.buf, &prev.size, fp) < 0)
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eprintf("getline:");
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while (getline(&cur.buf, &cur.size, fp) > 0) {
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if (uflag > linecmp((const char **) &cur.buf, (const char **) &prev.buf)) {
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if (!Cflag)
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weprintf("disorder: %s", cur.buf);
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exit(1);
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}
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tmp = cur;
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cur = prev;
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prev = tmp;
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}
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}
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static int
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linecmp(const char **a, const char **b)
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{
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@ -105,62 +138,23 @@ linecmp(const char **a, const char **b)
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return res;
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}
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static int
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parse_flags(char **s, int *flags, int bflag)
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static void
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check(FILE *fp)
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{
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while (isalpha((int)**s)) {
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switch (*((*s)++)) {
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case 'b':
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*flags |= bflag;
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break;
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case 'n':
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*flags |= MOD_N;
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break;
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case 'r':
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*flags |= MOD_R;
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break;
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default:
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return -1;
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static struct { char *buf; size_t size; } prev, cur, tmp;
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if (!prev.buf && getline(&prev.buf, &prev.size, fp) < 0)
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eprintf("getline:");
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while (getline(&cur.buf, &cur.size, fp) > 0) {
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if (uflag > linecmp((const char **) &cur.buf, (const char **) &prev.buf)) {
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if (!Cflag)
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weprintf("disorder: %s", cur.buf);
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exit(1);
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}
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tmp = cur;
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cur = prev;
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prev = tmp;
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}
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return 0;
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}
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static int
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parse_keydef(struct keydef *kd, char *s, int flags)
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{
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char *rest = s;
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kd->start_column = 1;
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kd->start_char = 1;
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kd->end_column = 0; /* 0 means end of line */
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kd->end_char = 0;
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kd->flags = flags;
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kd->start_column = strtol(rest, &rest, 10);
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if (kd->start_column < 1)
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return -1;
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if (*rest == '.')
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kd->start_char = strtol(rest+1, &rest, 10);
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if (kd->start_char < 1)
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return -1;
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if (parse_flags(&rest, &kd->flags, MOD_STARTB) < 0)
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return -1;
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if (*rest == ',') {
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kd->end_column = strtol(rest+1, &rest, 10);
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if (kd->end_column < 1)
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return -1;
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if (*rest == '.') {
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kd->end_char = strtol(rest+1, &rest, 10);
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if (kd->end_char < 0)
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return -1;
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}
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if (parse_flags(&rest, &kd->flags, MOD_ENDB) < 0)
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return -1;
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}
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return -(*rest);
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}
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static char *
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@ -232,7 +226,8 @@ columns(char *line, const struct keydef *kd, char **col, size_t *colsiz)
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static void
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usage(void)
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{
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enprintf(2, "usage: %s [-Cbcmnru] [-o outfile] [-t delim] [-k def]... [file ...]\n", argv0);
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enprintf(2, "usage: %s [-Cbcmnru] [-o outfile] [-t delim] "
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"[-k def]... [file ...]\n", argv0);
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}
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int
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