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-rw-r--r--Str.c557
1 files changed, 557 insertions, 0 deletions
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+/* $Id: Str.c,v 1.8 2002/12/24 17:20:46 ukai Exp $ */
+/*
+ * String manipulation library for Boehm GC
+ *
+ * (C) Copyright 1998-1999 by Akinori Ito
+ *
+ * This software may be redistributed freely for this purpose, in full
+ * or in part, provided that this entire copyright notice is included
+ * on any copies of this software and applications and derivations thereof.
+ *
+ * This software is provided on an "as is" basis, without warranty of any
+ * kind, either expressed or implied, as to any matter including, but not
+ * limited to warranty of fitness of purpose, or merchantability, or
+ * results obtained from use of this software.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <gc.h>
+#include <stdarg.h>
+#include <string.h>
+#ifdef __EMX__ /* or include "fm.h" for HAVE_BCOPY? */
+#include <strings.h>
+#endif
+#include "Str.h"
+#include "myctype.h"
+
+#define INITIAL_STR_SIZE 32
+
+#ifdef STR_DEBUG
+/* This is obsolete, because "Str" can handle a '\0' character now. */
+#define STR_LENGTH_CHECK(x) if (((x)->ptr==0&&(x)->length!=0)||(strlen((x)->ptr)!=(x)->length))abort();
+#else /* not STR_DEBUG */
+#define STR_LENGTH_CHECK(x)
+#endif /* not STR_DEBUG */
+
+Str
+Strnew()
+{
+ Str x = GC_MALLOC(sizeof(struct _Str));
+ x->ptr = GC_MALLOC_ATOMIC(INITIAL_STR_SIZE);
+ x->ptr[0] = '\0';
+ x->area_size = INITIAL_STR_SIZE;
+ x->length = 0;
+ return x;
+}
+
+Str
+Strnew_size(int n)
+{
+ Str x = GC_MALLOC(sizeof(struct _Str));
+ x->ptr = GC_MALLOC_ATOMIC(n + 1);
+ x->ptr[0] = '\0';
+ x->area_size = n + 1;
+ x->length = 0;
+ return x;
+}
+
+Str
+Strnew_charp(char *p)
+{
+ Str x;
+ int n;
+
+ if (p == NULL)
+ return Strnew();
+ x = GC_MALLOC(sizeof(struct _Str));
+ n = strlen(p) + 1;
+ x->ptr = GC_MALLOC_ATOMIC(n);
+ x->area_size = n;
+ x->length = n - 1;
+ bcopy((void *)p, (void *)x->ptr, n);
+ return x;
+}
+
+Str
+Strnew_m_charp(char *p, ...)
+{
+ va_list ap;
+ Str r = Strnew();
+
+ va_start(ap, p);
+ while (p != NULL) {
+ Strcat_charp(r, p);
+ p = va_arg(ap, char *);
+ }
+ return r;
+}
+
+Str
+Strnew_charp_n(char *p, int n)
+{
+ Str x;
+
+ if (p == NULL)
+ return Strnew_size(n);
+ x = GC_MALLOC(sizeof(struct _Str));
+ x->ptr = GC_MALLOC_ATOMIC(n + 1);
+ x->area_size = n + 1;
+ x->length = n;
+ bcopy((void *)p, (void *)x->ptr, n);
+ x->ptr[n] = '\0';
+ return x;
+}
+
+Str
+Strdup(Str s)
+{
+ Str n = Strnew_size(s->length);
+ STR_LENGTH_CHECK(s);
+ Strcopy(n, s);
+ return n;
+}
+
+void
+Strclear(Str s)
+{
+ s->length = 0;
+ s->ptr[0] = '\0';
+}
+
+void
+Strfree(Str x)
+{
+ GC_free(x->ptr);
+ GC_free(x);
+}
+
+void
+Strcopy(Str x, Str y)
+{
+ STR_LENGTH_CHECK(x);
+ STR_LENGTH_CHECK(y);
+ if (x->area_size < y->length + 1) {
+ GC_free(x->ptr);
+ x->ptr = GC_MALLOC_ATOMIC(y->length + 1);
+ x->area_size = y->length + 1;
+ }
+ bcopy((void *)y->ptr, (void *)x->ptr, y->length + 1);
+ x->length = y->length;
+}
+
+void
+Strcopy_charp(Str x, char *y)
+{
+ int len;
+
+ STR_LENGTH_CHECK(x);
+ if (y == NULL) {
+ x->length = 0;
+ return;
+ }
+ len = strlen(y);
+ if (x->area_size < len + 1) {
+ GC_free(x->ptr);
+ x->ptr = GC_MALLOC_ATOMIC(len + 1);
+ x->area_size = len + 1;
+ }
+ bcopy((void *)y, (void *)x->ptr, len + 1);
+ x->length = len;
+}
+
+void
+Strcopy_charp_n(Str x, char *y, int n)
+{
+ int len = n;
+
+ STR_LENGTH_CHECK(x);
+ if (y == NULL) {
+ x->length = 0;
+ return;
+ }
+ if (x->area_size < len + 1) {
+ GC_free(x->ptr);
+ x->ptr = GC_MALLOC_ATOMIC(len + 1);
+ x->area_size = len + 1;
+ }
+ bcopy((void *)y, (void *)x->ptr, n);
+ x->ptr[n] = '\0';
+ x->length = n;
+}
+
+void
+Strcat_charp_n(Str x, char *y, int n)
+{
+ int newlen;
+
+ STR_LENGTH_CHECK(x);
+ if (y == NULL)
+ return;
+ newlen = x->length + n + 1;
+ if (x->area_size < newlen) {
+ char *old = x->ptr;
+ newlen = newlen * 3 / 2;
+ x->ptr = GC_MALLOC_ATOMIC(newlen);
+ x->area_size = newlen;
+ bcopy((void *)old, (void *)x->ptr, x->length);
+ GC_free(old);
+ }
+ bcopy((void *)y, (void *)&x->ptr[x->length], n);
+ x->length += n;
+ x->ptr[x->length] = '\0';
+}
+
+void
+Strcat(Str x, Str y)
+{
+ STR_LENGTH_CHECK(y);
+ Strcat_charp_n(x, y->ptr, y->length);
+}
+
+void
+Strcat_charp(Str x, char *y)
+{
+ if (y == NULL)
+ return;
+ Strcat_charp_n(x, y, strlen(y));
+}
+
+void
+Strcat_m_charp(Str x, ...)
+{
+ va_list ap;
+ char *p;
+
+ va_start(ap, x);
+ while ((p = va_arg(ap, char *)) != NULL)
+ Strcat_charp_n(x, p, strlen(p));
+}
+
+void
+Strgrow(Str x)
+{
+ char *old = x->ptr;
+ int newlen;
+ newlen = x->length * 6 / 5;
+ if (newlen == x->length)
+ newlen += 2;
+ x->ptr = GC_MALLOC_ATOMIC(newlen);
+ x->area_size = newlen;
+ bcopy((void *)old, (void *)x->ptr, x->length);
+ GC_free(old);
+}
+
+Str
+Strsubstr(Str s, int beg, int len)
+{
+ Str new_s;
+ int i;
+
+ STR_LENGTH_CHECK(s);
+ new_s = Strnew();
+ if (beg >= s->length)
+ return new_s;
+ for (i = 0; i < len && beg + i < s->length; i++)
+ Strcat_char(new_s, s->ptr[beg + i]);
+ return new_s;
+}
+
+void
+Strlower(Str s)
+{
+ int i;
+ STR_LENGTH_CHECK(s);
+ for (i = 0; i < s->length; i++)
+ s->ptr[i] = TOLOWER(s->ptr[i]);
+}
+
+void
+Strupper(Str s)
+{
+ int i;
+ STR_LENGTH_CHECK(s);
+ for (i = 0; i < s->length; i++)
+ s->ptr[i] = TOUPPER(s->ptr[i]);
+}
+
+void
+Strchop(Str s)
+{
+ STR_LENGTH_CHECK(s);
+ while ((s->ptr[s->length - 1] == '\n' || s->ptr[s->length - 1] == '\r') &&
+ s->length > 0) {
+ s->length--;
+ }
+ s->ptr[s->length] = '\0';
+}
+
+void
+Strinsert_char(Str s, int pos, char c)
+{
+ int i;
+ STR_LENGTH_CHECK(s);
+ if (pos < 0 || s->length < pos)
+ return;
+ if (s->length + 2 > s->area_size)
+ Strgrow(s);
+ for (i = s->length; i > pos; i--)
+ s->ptr[i] = s->ptr[i - 1];
+ s->ptr[++s->length] = '\0';
+ s->ptr[pos] = c;
+}
+
+void
+Strinsert_charp(Str s, int pos, char *p)
+{
+ STR_LENGTH_CHECK(s);
+ while (*p)
+ Strinsert_char(s, pos++, *(p++));
+}
+
+void
+Strdelete(Str s, int pos, int n)
+{
+ int i;
+ STR_LENGTH_CHECK(s);
+ if (s->length <= pos + n) {
+ s->ptr[pos] = '\0';
+ s->length = pos;
+ return;
+ }
+ for (i = pos; i < s->length - n; i++)
+ s->ptr[i] = s->ptr[i + n];
+ s->ptr[i] = '\0';
+ s->length = i;
+}
+
+void
+Strtruncate(Str s, int pos)
+{
+ STR_LENGTH_CHECK(s);
+ s->ptr[pos] = '\0';
+ s->length = pos;
+}
+
+void
+Strshrink(Str s, int n)
+{
+ STR_LENGTH_CHECK(s);
+ if (n >= s->length) {
+ s->length = 0;
+ s->ptr[0] = '\0';
+ }
+ else {
+ s->length -= n;
+ s->ptr[s->length] = '\0';
+ }
+}
+
+void
+Strremovefirstspaces(Str s)
+{
+ int i;
+
+ STR_LENGTH_CHECK(s);
+ for (i = 0; i < s->length && IS_SPACE(s->ptr[i]); i++) ;
+ if (i == 0)
+ return;
+ Strdelete(s, 0, i);
+}
+
+void
+Strremovetrailingspaces(Str s)
+{
+ int i;
+
+ STR_LENGTH_CHECK(s);
+ for (i = s->length - 1; i >= 0 && IS_SPACE(s->ptr[i]); i--) ;
+ s->length = i + 1;
+ s->ptr[i + 1] = '\0';
+}
+
+Str
+Stralign_left(Str s, int width)
+{
+ Str n;
+ int i;
+
+ STR_LENGTH_CHECK(s);
+ if (s->length >= width)
+ return Strdup(s);
+ n = Strnew_size(width);
+ Strcopy(n, s);
+ for (i = s->length; i < width; i++)
+ Strcat_char(n, ' ');
+ return n;
+}
+
+Str
+Stralign_right(Str s, int width)
+{
+ Str n;
+ int i;
+
+ STR_LENGTH_CHECK(s);
+ if (s->length >= width)
+ return Strdup(s);
+ n = Strnew_size(width);
+ for (i = s->length; i < width; i++)
+ Strcat_char(n, ' ');
+ Strcat(n, s);
+ return n;
+}
+
+Str
+Stralign_center(Str s, int width)
+{
+ Str n;
+ int i, w;
+
+ STR_LENGTH_CHECK(s);
+ if (s->length >= width)
+ return Strdup(s);
+ n = Strnew_size(width);
+ w = (width - s->length) / 2;
+ for (i = 0; i < w; i++)
+ Strcat_char(n, ' ');
+ Strcat(n, s);
+ for (i = w + s->length; i < width; i++)
+ Strcat_char(n, ' ');
+ return n;
+}
+
+#define SP_NORMAL 0
+#define SP_PREC 1
+#define SP_PREC2 2
+
+Str
+Sprintf(char *fmt, ...)
+{
+ int len = 0;
+ int status = SP_NORMAL;
+ int p = 0;
+ char *f;
+ Str s;
+ va_list ap;
+
+ va_start(ap, fmt);
+ for (f = fmt; *f; f++) {
+ redo:
+ switch (status) {
+ case SP_NORMAL:
+ if (*f == '%') {
+ status = SP_PREC;
+ p = 0;
+ }
+ else
+ len++;
+ break;
+ case SP_PREC:
+ if (IS_ALPHA(*f)) {
+ /* conversion char. */
+ double vd;
+ int vi;
+ char *vs;
+ void *vp;
+
+ switch (*f) {
+ case 'l':
+ case 'h':
+ case 'L':
+ case 'w':
+ continue;
+ case 'd':
+ case 'i':
+ case 'o':
+ case 'x':
+ case 'X':
+ case 'u':
+ vi = va_arg(ap, int);
+ len += (p > 0) ? p : 10;
+ break;
+ case 'f':
+ case 'g':
+ case 'e':
+ case 'G':
+ case 'E':
+ vd = va_arg(ap, double);
+ len += (p > 0) ? p : 15;
+ break;
+ case 'c':
+ len += 1;
+ vi = va_arg(ap, int);
+ break;
+ case 's':
+ vs = va_arg(ap, char *);
+ vi = strlen(vs);
+ len += (p > vi) ? p : vi;
+ break;
+ case 'p':
+ vp = va_arg(ap, void *);
+ len += 10;
+ break;
+ case 'n':
+ vp = va_arg(ap, void *);
+ break;
+ }
+ status = SP_NORMAL;
+ }
+ else if (IS_DIGIT(*f))
+ p = p * 10 + *f - '0';
+ else if (*f == '.')
+ status = SP_PREC2;
+ else if (*f == '%') {
+ status = SP_NORMAL;
+ len++;
+ }
+ break;
+ case SP_PREC2:
+ if (IS_ALPHA(*f)) {
+ status = SP_PREC;
+ goto redo;
+ }
+ break;
+ }
+ }
+ va_end(ap);
+ s = Strnew_size(len * 2);
+ va_start(ap, fmt);
+ vsprintf(s->ptr, fmt, ap);
+ va_end(ap);
+ s->length = strlen(s->ptr);
+ if (s->length > len * 2) {
+ fprintf(stderr, "Sprintf: string too long\n");
+ exit(1);
+ }
+ return s;
+}
+
+Str
+Strfgets(FILE * f)
+{
+ Str s = Strnew();
+ char c;
+ while (1) {
+ c = fgetc(f);
+ if (feof(f) || ferror(f))
+ break;
+ Strcat_char(s, c);
+ if (c == '\n')
+ break;
+ }
+ return s;
+}
+
+Str
+Strfgetall(FILE * f)
+{
+ Str s = Strnew();
+ char c;
+ while (1) {
+ c = fgetc(f);
+ if (feof(f) || ferror(f))
+ break;
+ Strcat_char(s, c);
+ }
+ return s;
+}
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