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changed how to handle appends(a,r,R), to use less memory when append text/file is large

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This commit is contained in:
hyung-hwan
2011-09-27 22:51:26 +00:00
parent 00d9d74a7f
commit 9fb0bc1628
7 changed files with 184 additions and 124 deletions
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2
qse/lib/awk/err.c
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@ -25,6 +25,7 @@ const qse_char_t* qse_awk_dflerrstr (qse_awk_t* awk, qse_awk_errnum_t errnum)
static const qse_char_t* errstr[] =
{
QSE_T("no error"),
QSE_T("internal error that should never have happened"),
QSE_T("insufficient memory"),
QSE_T("invalid parameter or data"),
@ -39,7 +40,6 @@ const qse_char_t* qse_awk_dflerrstr (qse_awk_t* awk, qse_awk_errnum_t errnum)
QSE_T("cannot write '${0}'"),
QSE_T("cannot close '${0}'"),
QSE_T("internal error that should never have happened"),
QSE_T("general runtime error"),
QSE_T("block nested too deeply"),
QSE_T("expression nested too deeply"),

2
qse/lib/sed/err.c
View File

@ -26,6 +26,8 @@ const qse_char_t* qse_sed_dflerrstr (qse_sed_t* sed, qse_sed_errnum_t errnum)
static const qse_char_t* errstr[] =
{
QSE_T("no error"),
QSE_T("internal error that should never have happened"),
QSE_T("insufficient memory"),
QSE_T("invalid parameter or data"),
QSE_T("command '${0}' not recognized"),

273
qse/lib/sed/sed.c
View File

@ -38,6 +38,7 @@ QSE_IMPLEMENT_COMMON_FUNCTIONS (sed)
static void free_command (qse_sed_t* sed, qse_sed_cmd_t* cmd);
static void free_all_command_blocks (qse_sed_t* sed);
static void free_appends (qse_sed_t* sed);
static int emit_output (qse_sed_t* sed, int skipline);
#define EMPTY_REX ((void*)1)
@ -102,7 +103,7 @@ int qse_sed_init (qse_sed_t* sed, qse_mmgr_t* mmgr)
qse_map_mancbs(QSE_MAP_MANCBS_INLINE_KEY_COPIER)
);
if (qse_str_init (&sed->e.txt.append, mmgr, 256) <= -1) goto oops_5;
/* init_append (sed); */
if (qse_str_init (&sed->e.txt.hold, mmgr, 256) <= -1) goto oops_6;
if (qse_str_init (&sed->e.txt.subst, mmgr, 256) <= -1) goto oops_7;
@ -116,8 +117,6 @@ int qse_sed_init (qse_sed_t* sed, qse_mmgr_t* mmgr)
oops_7:
qse_str_fini (&sed->e.txt.hold);
oops_6:
qse_str_fini (&sed->e.txt.append);
oops_5:
qse_map_fini (&sed->tmp.labs);
oops_3:
qse_str_fini (&sed->tmp.lab);
@ -134,7 +133,7 @@ void qse_sed_fini (qse_sed_t* sed)
qse_str_fini (&sed->e.txt.subst);
qse_str_fini (&sed->e.txt.hold);
qse_str_fini (&sed->e.txt.append);
free_appends (sed);
qse_map_fini (&sed->tmp.labs);
qse_str_fini (&sed->tmp.lab);
@ -1788,84 +1787,6 @@ static int read_char (qse_sed_t* sed, qse_char_t* c)
}
}
static int read_file (
qse_sed_t* sed, qse_sed_cmd_t* cmd,
const qse_char_t* path, qse_size_t plen, int line)
{
qse_ssize_t n;
qse_sed_io_arg_t arg;
qse_char_t buf[256];
arg.path = path;
sed->errnum = QSE_SED_ENOERR;
n = sed->e.in.fun (sed, QSE_SED_IO_OPEN, &arg, QSE_NULL, 0);
if (n <= -1)
{
/*if (sed->errnum != QSE_SED_ENOERR)
* SETERR0 (sed, QSE_SED_EIOUSR, &cmd->loc);
*return -1;*/
/* it is ok if it is not able to open a file */
return 0;
}
if (n == 0)
{
/* EOF - no data */
sed->e.in.fun (sed, QSE_SED_IO_CLOSE, &arg, QSE_NULL, 0);
return 0;
}
while (1)
{
sed->errnum = QSE_SED_ENOERR;
n = sed->e.in.fun (
sed, QSE_SED_IO_READ, &arg, buf, QSE_COUNTOF(buf));
if (n <= -1)
{
sed->e.in.fun (sed, QSE_SED_IO_CLOSE, &arg, QSE_NULL, 0);
if (sed->errnum == QSE_SED_ENOERR)
SETERR1 (sed, QSE_SED_EIOFIL, path, plen, &cmd->loc);
else sed->errloc = cmd->loc;
return -1;
}
if (n == 0) break;
if (line)
{
qse_size_t i;
for (i = 0; i < n; i++)
{
if (qse_str_ccat (&sed->e.txt.append, buf[i]) == (qse_size_t)-1)
{
sed->e.in.fun (
sed, QSE_SED_IO_CLOSE,
&arg, QSE_NULL, 0);
SETERR0 (sed, QSE_SED_ENOMEM, &cmd->loc);
return -1;
}
/* TODO: support different line end convension */
if (buf[i] == QSE_T('\n')) goto done;
}
}
else
{
if (qse_str_ncat (&sed->e.txt.append, buf, n) == (qse_size_t)-1)
{
sed->e.in.fun (
sed, QSE_SED_IO_CLOSE,
&arg, QSE_NULL, 0);
SETERR0 (sed, QSE_SED_ENOMEM, &cmd->loc);
return -1;
}
}
}
done:
sed->e.in.fun (sed, QSE_SED_IO_CLOSE, &arg, QSE_NULL, 0);
return 0;
}
static int read_line (qse_sed_t* sed, int append)
{
qse_size_t len = 0;
@ -1974,6 +1895,7 @@ static int write_str (qse_sed_t* sed, const qse_char_t* str, qse_size_t len)
if (flush (sed) <= -1) return -1;
flush_needed = 0;
}
/* TODO: handle different line ending convension... */
else if (str[i] == QSE_T('\n')) flush_needed = 1;
}
@ -2202,6 +2124,162 @@ static int write_str_to_file (
return 0;
}
static int write_file (
qse_sed_t* sed, qse_sed_cmd_t* cmd, int first_line)
{
qse_ssize_t n;
qse_sed_io_arg_t arg;
#ifdef QSE_CHAR_IS_MCHAR
qse_char_t buf[1024];
#else
qse_char_t buf[512];
#endif
arg.path = cmd->u.file.ptr;
sed->errnum = QSE_SED_ENOERR;
n = sed->e.in.fun (sed, QSE_SED_IO_OPEN, &arg, QSE_NULL, 0);
if (n <= -1)
{
/*if (sed->errnum != QSE_SED_ENOERR)
* SETERR0 (sed, QSE_SED_EIOUSR, &cmd->loc);
*return -1;*/
/* it is ok if it is not able to open a file */
return 0;
}
if (n == 0)
{
/* EOF - no data */
sed->e.in.fun (sed, QSE_SED_IO_CLOSE, &arg, QSE_NULL, 0);
return 0;
}
while (1)
{
sed->errnum = QSE_SED_ENOERR;
n = sed->e.in.fun (
sed, QSE_SED_IO_READ, &arg, buf, QSE_COUNTOF(buf));
if (n <= -1)
{
sed->e.in.fun (sed, QSE_SED_IO_CLOSE, &arg, QSE_NULL, 0);
if (sed->errnum == QSE_SED_ENOERR)
SETERR1 (sed, QSE_SED_EIOFIL, cmd->u.file.ptr, cmd->u.file.len, &cmd->loc);
else sed->errloc = cmd->loc;
return -1;
}
if (n == 0) break;
if (first_line)
{
qse_size_t i;
for (i = 0; i < n; i++)
{
if (write_char (sed, buf[i]) <= -1) return -1;
/* TODO: support different line end convension */
if (buf[i] == QSE_T('\n')) goto done;
}
}
else
{
if (write_str (sed, buf, n) <= -1) return -1;
}
}
done:
sed->e.in.fun (sed, QSE_SED_IO_CLOSE, &arg, QSE_NULL, 0);
return 0;
}
static int link_append (qse_sed_t* sed, qse_sed_cmd_t* cmd)
{
if (sed->e.append.count < QSE_COUNTOF(sed->e.append.s))
{
/* link it to the static buffer if it is not full */
sed->e.append.s[sed->e.append.count++].cmd = cmd;
}
else
{
qse_sed_app_t* app;
/* otherwise, link it using a linked list */
app = QSE_MMGR_ALLOC (sed->mmgr, QSE_SIZEOF(*app));
if (app == QSE_NULL)
{
SETERR0 (sed, QSE_SED_ENOMEM, &cmd->loc);
return -1;
}
app->cmd = cmd;
app->next = QSE_NULL;
if (sed->e.append.d.tail == QSE_NULL)
sed->e.append.d.head = app;
else
sed->e.append.d.tail->next = app;
sed->e.append.d.tail = app;
/*sed->e.append.count++; don't really care */
}
return 0;
}
static void free_appends (qse_sed_t* sed)
{
qse_sed_app_t* app = sed->e.append.d.head;
qse_sed_app_t* next;
while (app)
{
next = app->next;
QSE_MMGR_FREE (sed->mmgr, app);
app = next;
}
sed->e.append.d.head = QSE_NULL;
sed->e.append.d.tail = QSE_NULL;
sed->e.append.count = 0;
}
static int emit_append (qse_sed_t* sed, qse_sed_app_t* app)
{
switch (app->cmd->type)
{
case QSE_SED_CMD_APPEND:
return write_str (sed, app->cmd->u.text.ptr, app->cmd->u.text.len);
case QSE_SED_CMD_READ_FILE:
return write_file (sed, app->cmd, 0);
case QSE_SED_CMD_READ_FILELN:
return write_file (sed, app->cmd, 1);
default:
QSE_ASSERT (!"should never happen - app->cmd->type must be one of APPEND,READ_FILE,READ_FILELN");
SETERR0 (sed, QSE_SED_EINTERN, &app->cmd->loc);
return -1;
}
}
static int emit_appends (qse_sed_t* sed)
{
qse_sed_app_t* app;
qse_size_t i;
for (i = 0; i < sed->e.append.count; i++)
{
if (emit_append (sed, &sed->e.append.s[i]) <= -1) return -1;
}
app = sed->e.append.d.head;
while (app)
{
if (emit_append (sed, app) <= -1) return -1;
app = app->next;
}
return 0;
}
static int do_subst (qse_sed_t* sed, qse_sed_cmd_t* cmd)
{
qse_cstr_t mat, pmat;
@ -2671,14 +2749,7 @@ static qse_sed_cmd_t* exec_cmd (qse_sed_t* sed, qse_sed_cmd_t* cmd)
break;
case QSE_SED_CMD_APPEND:
if (qse_str_ncat (
&sed->e.txt.append,
cmd->u.text.ptr,
cmd->u.text.len) == (qse_size_t)-1)
{
SETERR0 (sed, QSE_SED_ENOMEM, QSE_NULL);
return QSE_NULL;
}
if (link_append (sed, cmd) <= -1) return QSE_NULL;
break;
case QSE_SED_CMD_INSERT:
@ -2873,15 +2944,11 @@ static qse_sed_cmd_t* exec_cmd (qse_sed_t* sed, qse_sed_cmd_t* cmd)
break;
case QSE_SED_CMD_READ_FILE:
n = read_file (
sed, cmd, cmd->u.file.ptr, cmd->u.file.len, 0);
if (n <= -1) return QSE_NULL;
if (link_append (sed, cmd) <= -1) return QSE_NULL;
break;
case QSE_SED_CMD_READ_FILELN:
n = read_file (
sed, cmd, cmd->u.file.ptr, cmd->u.file.len, 1);
if (n <= -1) return QSE_NULL;
if (link_append (sed, cmd) <= -1) return QSE_NULL;
break;
case QSE_SED_CMD_WRITE_FILE:
@ -3118,15 +3185,8 @@ static int emit_output (qse_sed_t* sed, int skipline)
if (n <= -1) return -1;
}
/* write text append by a and r */
n = write_str (
sed,
QSE_STR_PTR(&sed->e.txt.append),
QSE_STR_LEN(&sed->e.txt.append)
);
if (n <= -1) return -1;
qse_str_clear (&sed->e.txt.append);
if (emit_appends (sed) <= -1) return -1;
free_appends (sed);
/* flush the output stream in case it's not flushed
* in write functions */
@ -3165,7 +3225,8 @@ int qse_sed_exec (qse_sed_t* sed, qse_sed_io_fun_t inf, qse_sed_io_fun_t outf)
sed->e.last_rex = QSE_NULL;
sed->e.subst_done = 0;
qse_str_clear (&sed->e.txt.append);
free_appends (sed);
qse_str_clear (&sed->e.txt.subst);
qse_str_clear (&sed->e.txt.hold);
if (qse_str_ccat (&sed->e.txt.hold, QSE_T('\n')) == (qse_size_t)-1)

20
qse/lib/sed/sed.h
View File

@ -67,12 +67,7 @@ struct qse_sed_adr_t
typedef struct qse_sed_app_t qse_sed_app_t;
struct qse_sed_app_t
{
enum
{
QSE_SED_APP_STR,
QSE_SED_APP_FILE
};
qse_cstr_t text;
qse_sed_cmd_t* cmd;
qse_sed_app_t* next;
};
@ -269,18 +264,19 @@ struct qse_sed_t
qse_size_t num; /**< current line number */
} in;
/** text buffers */
struct
{
#if 0
qse_size_t count; /* number of append entries in a static buffer. */
qse_sed_app_t s[16]; /* handle up to 16 appends in a static buffer */
struct
{
qse_sed_app_t* head;
qse_sed_app_t* tail;
} append;
#endif
qse_str_t append;
} d;
} append;
/** text buffers */
struct
{
qse_str_t hold; /* hold space */
qse_str_t subst;
} txt;