Diff of /pkg/R/corpus.R

Parent Directory | Revision Log | Patch

	revision 1300, Fri Mar 21 14:30:05 2014 UTC	revision 1306, Tue Mar 25 08:37:05 2014 UTC
#	Line 16	Line 16
16
17	PCorpus <-	PCorpus <-
18	function(x,	function(x,
19	readerControl = list(reader = x$DefaultReader, language = "en"),	readerControl = list(reader = x$defaultreader, language = "en"),
20	dbControl = list(dbName = "", dbType = "DB1"))	dbControl = list(dbName = "", dbType = "DB1"))
21	{	{
22	stopifnot(inherits(x, "Source"))	stopifnot(inherits(x, "Source"))
23
24	readerControl <- prepareReader(readerControl, x$DefaultReader)	readerControl <- prepareReader(readerControl, x$defaultreader)
25
26	if (is.function(readerControl$init))	if (is.function(readerControl$init))
27	readerControl$init()	readerControl$init()
#	Line 34	Line 34
34	db <- filehash::dbInit(dbControl$dbName, dbControl$dbType)	db <- filehash::dbInit(dbControl$dbName, dbControl$dbType)
35
36	# Allocate memory in advance if length is known	# Allocate memory in advance if length is known
37	tdl <- if (x$Length > 0)	tdl <- if (x$length > 0)
38	vector("list", as.integer(x$Length))	vector("list", as.integer(x$length))
39	else	else
40	list()	list()
41
#	Line 43	Line 43
43	while (!eoi(x)) {	while (!eoi(x)) {
44	x <- stepNext(x)	x <- stepNext(x)
45	elem <- getElem(x)	elem <- getElem(x)
46	id <- if (is.null(x$Names) || is.na(x$Names))	id <- if (is.null(x$names) || is.na(x$names))
47	as.character(counter)	as.character(counter)
48	else	else
49	x$Names[counter]	x$names[counter]
50	doc <- readerControl$reader(elem, readerControl$language, id)	doc <- readerControl$reader(elem, readerControl$language, id)
51	filehash::dbInsert(db, meta(doc, "ID"), doc)	filehash::dbInsert(db, meta(doc, "id"), doc)
52	if (x$Length > 0) tdl[[counter]] <- meta(doc, "ID")	if (x$length > 0) tdl[[counter]] <- meta(doc, "id")
53	else tdl <- c(tdl, meta(doc, "ID"))	else tdl <- c(tdl, meta(doc, "id"))
54	counter <- counter + 1	counter <- counter + 1
55	}	}
56	if (!is.null(x$Names) && !is.na(x$Names))	if (!is.null(x$names) && !is.na(x$names))
57	names(tdl) <- x$Names	names(tdl) <- x$names
58
59	df <- data.frame(MetaID = rep(0, length(tdl)), stringsAsFactors = FALSE)	df <- data.frame(MetaID = rep(0, length(tdl)), stringsAsFactors = FALSE)
60	filehash::dbInsert(db, "DMetaData", df)	filehash::dbInsert(db, "DMetaData", df)
#	Line 74	Line 74
74
75	VCorpus <-	VCorpus <-
76	Corpus <-	Corpus <-
77	function(x, readerControl = list(reader = x$DefaultReader, language = "en"))	function(x, readerControl = list(reader = x$defaultreader, language = "en"))
78	{	{
79	stopifnot(inherits(x, "Source"))	stopifnot(inherits(x, "Source"))
80
81	readerControl <- prepareReader(readerControl, x$DefaultReader)	readerControl <- prepareReader(readerControl, x$defaultreader)
82
83	if (is.function(readerControl$init))	if (is.function(readerControl$init))
84	readerControl$init()	readerControl$init()
#	Line 87	Line 87
87	on.exit(readerControl$exit())	on.exit(readerControl$exit())
88
89	# Allocate memory in advance if length is known	# Allocate memory in advance if length is known
90	tdl <- if (x$Length > 0)	tdl <- if (x$length > 0)
91	vector("list", as.integer(x$Length))	vector("list", as.integer(x$length))
92	else	else
93	list()	list()
94
95	if (x$Vectorized)	if (x$vectorized)
96	tdl <- mapply(function(x, id) readerControl$reader(x, readerControl$language, id),	tdl <- mapply(function(elem, id) readerControl$reader(elem, readerControl$language, id),
97	pGetElem(x),	pGetElem(x),
98	id = if (is.null(x$Names) || is.na(x$Names)) as.character(seq_len(x$Length)) else x$Names,	id = if (is.null(x$names) || is.na(x$names)) as.character(seq_len(x$length)) else x$names,
99	SIMPLIFY = FALSE)	SIMPLIFY = FALSE)
100	else {	else {
101	counter <- 1	counter <- 1
102	while (!eoi(x)) {	while (!eoi(x)) {
103	x <- stepNext(x)	x <- stepNext(x)
104	elem <- getElem(x)	elem <- getElem(x)
105	id <- if (is.null(x$Names) || is.na(x$Names))	id <- if (is.null(x$names) || is.na(x$names))
106	as.character(counter)	as.character(counter)
107	else	else
108	x$Names[counter]	x$names[counter]
109	doc <- readerControl$reader(elem, readerControl$language, id)	doc <- readerControl$reader(elem, readerControl$language, id)
110	if (x$Length > 0)	if (x$length > 0)
111	tdl[[counter]] <- doc	tdl[[counter]] <- doc
112	else	else
113	tdl <- c(tdl, list(doc))	tdl <- c(tdl, list(doc))
114	counter <- counter + 1	counter <- counter + 1
115	}	}
116	}	}
117	if (!is.null(x$Names) && !is.na(x$Names))	if (!is.null(x$names) && !is.na(x$names))
118	names(tdl) <- x$Names	names(tdl) <- x$names
119	df <- data.frame(MetaID = rep(0, length(tdl)), stringsAsFactors = FALSE)	df <- data.frame(MetaID = rep(0, length(tdl)), stringsAsFactors = FALSE)
120	.VCorpus(tdl, .MetaDataNode(), df)	.VCorpus(tdl, .MetaDataNode(), df)
121	}	}
#	Line 155	Line 155
155	{	{
156	if (is.character(i)) {	if (is.character(i)) {
157	if (is.null(names(x)))	if (is.null(names(x)))
158	match(i, meta(x, "ID", type = "local"))	match(i, meta(x, "id", type = "local"))
159	else	else
160	match(i, names(x))	match(i, names(x))
161	}	}
#	Line 397	Line 397
397	function(x, path = ".", filenames = NULL)	function(x, path = ".", filenames = NULL)
398	{	{
399	filenames <- file.path(path,	filenames <- file.path(path,
400	if (is.null(filenames)) unlist(lapply(x, function(x) sprintf("%s.txt", meta(x, "ID"))))	if (is.null(filenames))
401		sprintf("%s.txt", as.character(meta(x, "id", "local")))
402	else filenames)	else filenames)
403	i <- 1
404	for (o in x) {	stopifnot(length(x) == length(filenames))
405	writeLines(as.PlainTextDocument(o), filenames[i])
406	i <- i + 1	mapply(function(doc, f) writeLines(as.character(doc), f), x, filenames)
407	}
408		invisible(x)
409	}	}

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