acl4のページ0004

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(1)

#if (a_Version >= 1)
    #define VecChr_vprintf              a_VecChr_vprintf
    #define VecChr_printf               a_VecChr_printf
    #define VecChr_putc                 a_VecChr_putc
    #define VecChr_readFileAll          a_VecChr_readFileAll
    #define VecChr_readFileAll_errChk   a_VecChr_readFileAll_errChk
    #define VecChr_eraseCr              a_VecChr_eraseCr
    #define VecChr_writeFileAll         a_VecChr_writeFileAll
    #define VecChr_writeFileAll_errChk  a_VecChr_writeFileAll_errChk
    #define VecChr_stkAdd               a_VecChr_stkAdd
    #define VecChr_stkRmv               a_VecChr_stkRmv
#endif

a_static intptr_t a_VecChr_vprintf(a_VecChr *w, const char *f, va_list a)
{
    intptr_t d = w->n1 - w->n;
    intptr_t i = vsnprintf(w->p + w->n, d, f, a);
    if (i <= 0) goto fin;
    if (i + 1 > d) {
        a_VecChr_reserveDiff(w, i + 1);
        d = w->n1 - w->n;
        i = vsnprintf(w->p + w->n, d, f, a);
        if (i <= 0) goto fin;
    }
    w->n += i;
fin:
    return i;
}

a_static intptr_t a_VecChr_printf(a_VecChr *w, const char *f, ...)
{
    va_list ap;
    va_start(ap, f);
    intptr_t i = a_VecChr_vprintf(w, f, ap);
    va_end(ap);
    return i;
}

a_static int a_VecChr_putc(a_VecChr *w, int c)
{
    a_VecChr_reserveDiff(w, 2);
    w->p[w->n++] = c;
    w->p[w->n] = '\0';
    return c;
}

a_static intptr_t a_VecChr_readFileAll(a_VecChr *w, const char *path)
{
    FILE *fp = fopen(path, "rb");
    if (fp == NULL) return -1;
    intptr_t bufSz = 1024 * 1024, n0 = w->n;
    for (;;) {
        a_VecChr_reserveDiff(w, bufSz);
        int i = fread(w->p + w->n, 1, bufSz, fp);
        if (i <= 0) break;
        w->n += i;
    }
    fclose(fp);
    a_VecChr_reserve0(w);
    a_VecChr_shrink(_arg_  w, 1);
    return w->n - n0;
}

a_static intptr_t a_VecChr_readFileAll_errChk(a_VecChr *w, const char *path)
{
    if (path == NULL) a_errExit("fopen error: path=NULL");
    intptr_t i = a_VecChr_readFileAll(w, path);
    if (i < 0) a_errExit("fopen error: %s", path);
    return i;
}

a_static intptr_t a_VecChr_eraseCr(a_VecChr *w)
{
    char *p, *q, *p1;
    p = q = w->p;
    p1 = p + w->n;
    while (p < p1) {
        if (*p++ != '\r')
            *q++ = p[-1];
    }
    w->n -= p1 - q;
    a_VecChr_reserve0(w);
    return p1 - q;
}

a_static intptr_t a_VecChr_writeFileAll(a_VecChr *w, const char *path, const char *mod)
{
    FILE *fp = fopen(path, mod);
    if (fp == NULL) return -1;
    intptr_t i = 0, j;
    for (;;) {
        j = fwrite(w->p + i, 1, w->n - i, fp);
        if (j <= 0) break;
        i += j;
    }
    fclose(fp);
    return i;
}

a_static intptr_t a_VecChr_writeFileAll_errChk(a_VecChr *w, const char *path, const char *mod)
{
    if (path == NULL) a_errExit("fopen error: path=NULL");
    intptr_t i = a_VecChr_writeFileAll(w, path, mod);
    if (i < 0)
        a_errExit("fopen error: %s", path);
    if (i < w->n)
        a_errExit("fwrite error: %s", path);
    return i;
}

a_static void *a_VecChr_stkAdd(a_VecChr *w, intptr_t sz)
{
    a_VecChr_resizeDiff(_arg_  w, + sz);
    return w->p + w->n - sz;
}

a_static void *a_VecChr_stkRmv(a_VecChr *w, intptr_t sz)
{
    a_VecChr_resizeDiff(_arg_  w, - sz);
    return w->p + w->n - sz;
}
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(2) VecChr_printf など

↑

(3) サンプルプログラム: t0004a.c

#define a_Version 1
#include <acl4.c>

int main()
{
    VecChr vc[1]; VecChr_ini(vc);
    VecChr_printf(vc, "hello, world\n");
    int i;
    for (i = 0; i < 10; i++)
        VecChr_printf(vc, "%d ", i);
    VecChr_putc(vc, '\n');
    printf("%s", vc->p); // メモリ内で作った文字列を一気に出力.
    printf("vc.n=(%d/%d)\n", vc->n, vc->n1);
    VecChr_din(vc);
    a_malloc_debugList(_arg); // 開放忘れがないことを確認するために、これを書くくせがある.
    return 0;
}
>t0004a
hello, world
0 1 2 3 4 5 6 7 8 9
vc.n=(34/64)
t0004a.c(15): malloc_debugList()
↑

(4) VecChr_stkAdd, stkRmv

↑

(5) サンプルプログラム: t0004b.c

#define a_Version 1
#include "acl4.c"

class_(Elm) { int i; const char *s; };

int main()
{
    VecChr stk[1]; VecChr_ini(stk); Elm *sp;

    sp = VecChr_stkAdd(stk, sizeof (Elm)); sp->i = 123; sp->s = "abc";
    sp = VecChr_stkAdd(stk, sizeof (Elm)); sp->i = 456; sp->s = "def";
    sp = VecChr_stkAdd(stk, sizeof (Elm)); sp->i = 789; sp->s = "ghi";
    printf("stack-top = [%d, %s]\n", sp->i, sp->s);
    sp = VecChr_stkRmv(stk, sizeof (Elm));
    printf("stack-top = [%d, %s]\n", sp->i, sp->s);
    sp = VecChr_stkRmv(stk, sizeof (Elm));
    printf("stack-top = [%d, %s]\n", sp->i, sp->s);

    VecChr_din(stk);
    a_malloc_debugList(_arg);
    return 0;
}
>t0004b
stack-top = [789, ghi]
stack-top = [456, def]
stack-top = [123, abc]
t0004b.c(20): malloc_debugList()
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(99) 更新履歴

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